I have a friend with a 2011 Mazda3, and another with a 2011 MS3. Everytime I ride in either of their cars the thought goes though my mind that either of these seats would be great in my 2. I need to convince one of my friends to do a trial swap of the passengers seat at least to see what would need to be done (if anything) to make the more supportive and sporty seat fit in the 2.
On a side-note, I have another friend who put a Recaro seat in his RSX. He loves it, however on a day to day basis, it seems kinda like a PITA. I don't know what model seat he has, but it's a fixed seat that is non-reclining.