I recently bought a britax prince for the rear of my supra. Been using it for a month since my son reached 9 months and its been great. Little one happy in it.
No part of the buckle touches the side of the seat when fitted tightly, so technically this eliminates buckle crunch according to many sites.
It was easy to fit, and can be held extremely tight. Doesn't budge near the base but i can tilt the head of the chair slightly forward.
It seems perfectly safe to me & my partner is very happy too.
However i know some people are extremely demanding when it comes to the little one.
Bought mine from babies r us £59.99
Go down and try one, can't go wrong. Looks nice in the soop too.