I don't understand how you have so many problems with your 2. I'm at 8k and I've never had one issue. My dealer takes great care of my car during servicing. I average 36-40 mpg depends on how heavy my foot is that tank.
So what are they giving you in trade for your 2? I need ammo for the stupid dealers im dealing with.
Rattling isnt bad on mine. I love the way the car handles on the autox courses, with my racing wheels\tires on she looks pretty mean, she gets great gas mileage..but personally the lack any power at all, mixed with looking like a big dork in a tiny little car that the wife makes fun of daily, and the yearning to go back to rwd after a 8 year hiatus makes the rx8 the car of choice in the near future (next summer would probably make more financial sense but we will see).