Re: I need a car seat
The SecureKid 400 has the sure latch that self tightens and I believe extra side impact protection.
Keep in mind though that there is a weight limit for using Latch. My car has a 40 lb limit, so for me the sure latch was pointless for my 43 lb kiddo. You should be able to find the vehicle weight limit for latch in your car's manual I believe.