[Papooses]

The only combination seat that harnesses past 40# is the Cosco Apex: it's rather flimsy comapred to Britax, though + its top slots are about the same as the Marathon/Wizard.... To keep kiddo harnessed longer, I would look into the Regent or contact customer service at Safety in Motion - E-Z-ON Products, Inc. of Florida about using their Kid-Y harness with a dedicated booster that you can use once the harness is outgrown (IME the Compass B510 would probably be the easiest to use the Kid-Y & Compass performs side impact crash testing, too).

FF seats are generally outgrown when the top of the shoulders are slightly above the top harness slot. Sometimes the cover gets in the way & gives the false appearance that there's more room than there really is, so use your finger to find where the hard shell/frame is in comparison to your child's shoulders).

Another option might be the Sunshine Kids Radian. You'd have enough time for kiddo's torso to grow just one more inch compared to the Marathon/Wizard. The Regent usually fits kids till about 8-10 years old. Sometimes kids don't need a booster after the Regent (at least not legally) but most do, IME (as per the laws of physics). With the new Regent installation instructions, I can't say whether the Regent or Radian would be easier to install -- except that both seem relatively easy so long as the vehicle has reclinable seatbacks (recline vehicle seatback, install carseat, bring vehicle seatback upright again: makes for a pretty easy & very secure fit).

	Forward Facing Car Seats A forward-facing car seat is one in which the child sits facing the front of the car. The seat should be installed in the back seat of your vehicle. Most forward-facing only seats are for children above 20 pounds.

	Britax - Click for more info Britax International has been producing reliable child safety products for over 30 years. Not only does Britax have decades of experience creating car seats and other children's safety equipment, Britax has a long standing reputation as an industry leader and innovator. Britax International is headquartered in the United Kingdom, but Britax car seats are designed and manufactured at facilities in Germany, Austria, and the United States. In the summer of 2002, Britax strengthened their commitment to creating the safest car seats with the opening of a brand new, state-of-the-art crash testing facility in North Carolina. Britax car seats have a reputation around the world for being some of the safest, most reliable, and best designed child safety seats ever made.

	Booster Seat A booster seat raises your child up so that the car's lap and shoulder belts fit correctly. The lap belt should fall across the upper thighs. The shoulder belt should go across the middle of the shoulder and chest. A booster seat is used for older children up to about 80 pounds. Some states have passed laws requiring booster seats for children up to age 8 or 80 pounds. Check your state's law.

	Britax Marathon - Click for more info Increasing the time a child can safely stay in their convertible car seat is a big issue and Britax engineers have come through in a big way with the introduction of the Britax Marathon with LATCH. A LATCH Compatible Convertible Child Seat, the Britax Marathon can be used rear facing 5 to 33 pounds and forward facing from 20 to 65 pounds. Compare the numbers and you will see it is hard to find a seat with these weight limits that is safe and functional.

	Britax Regent - Click for more info The Britax Regent is the safe way to carry your older and larger passengers, all the way up to 80 lbs. Known as the "king of all car seats," the Britax Regent will accomodate your little king or queen for far longer than traditional car seats or booster seats. The Regent features a large roto-molded shell, comfy extra-thick comfort foam, washable covers, Patented Versa-Tether™, flexible buckle LATCH system, patented HUGS™ system, and tangle-free polyester 5-point harness.

	the First Years formerly Compass - Click for more info Compass was founded by a group of fathers who had spent years in the corporate world developing child care products. Disillusioned with the slew of problems that come with working for a giant conglomerate, this group set out the make their own mark on the child care industry in 2003. Compass' first innovative booster seat, the B500, started shipping in January of 2004. This was the first foldable belt-positioning booster on the market, and its design was so praised by the industry that Compass received a Juvenile Products Manufacturing Association (JPMA) Innovation Award 5 months after its release. The great minds at Compass have now taken the next step with their success by releasing some fantastic infant car seats and compatible strollers, all of which are designed with the same innovative simplicity that make Compass Boosters such a sought after product. No longer just "The Booster People", Compass is making a serious run at the competition by offering the I-410 and I-420 Infant Car Seats , as well as the Magnesium S330 Stroller and Magnesium T730 Travel System.

	Sunshine Kids - Click for more info Makers of a number of accessories geared towards making parents lives easier, Sunshine Kids has recently embarked in a new direction. In 2005 they unveiled their first car seat, the Radian. Their years of experience working in children's products focusued on child comfort and parent convenience shine through in this unique convertible car seat. The Radian is packed with safety features and is the first ever folding convertible car seat appealing to parents who car pool or travel often.

	Sunshine Kids Radian 80 or 65 - Click for more info If "the Sunshine Kid's Radian 80 convertible car seat is (probably) the only car seat you will ever need," the "probably" part of this statement comes into play when you directly compare the Radian 80 with the Britax Regent. While the Radian 80 has a very high weight capacity, the seat width is only 10" vs. the Regent's 14" seat. The Britax Regent may be a bit wider, but it is very bulky, is only forward facing, and does not fold like the Radian 80. Because the Radian 80 is so narrow, you can potentially put three of them side by side in the back seat. Three Regents side by side? Impossible.