I'm down to 6'3" now, but I fit into the GTI without even having the seat all the way back. Aside from fitting, seat comfort is a key metric for me, ability to reach major controls, where the steering wheel is, etc. The Caddy had steering wheel controls that were useful, and when my wife unlocked it, they returned to her position. The GTI does not have memory seats.
I used to have a Chevy Sonic (with a stick) that I fit in just fine. That was a decent car for the money. The GTI is like the Sonic on 'roids.
I tend to think of the Lexus models as fancier versions of Toyotas.