[crunchierthanthou]

I am a tech. The pp has given you some great information.

Is the Altis like the Corolla in North America? Where are you located? What is your budget?

The last three seats that you listed only have 40 lb harnessed weight limits (~18 kg) and relatively low top harness positions. They are almost always outgrown before the child is ready for a booster. The same goes for the Britax Roundabout. The 3-in-1 does convert to a booster, but like the pp mentioned, it makes a poor one.

	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 Roundabout - Click for more info With the introduction of the new LATCH laws, Britax has improved even further upon their famously popular Roundabout Convertible Car Seat. This car seat has been praised by just about every consumer safety organization and mom and dad out there - and for good reason. It is easy to install, compatible in just about every car, super comfortable for baby, stylish and most importantly safe! Ask around and you will see that everyone raves about this car seat.