Yyea rx-7 is a good car... AFTER YOU DO A $5000 ENGINE REBUILD! If you want power and RELIABILITY you gotta go with a supra or a skyline... RX-7's engine is extreemly unreliable after ~100K...
BMW's are fast and faster than you may think... Let's compare Infinity g35 Coupe vs. BMW 330ci.
Engine: 3.5 V6 280hp/270tq 3.0 I-6 225hp/215tq

Tranny: 6spd 5spd

Weight: 3460 lbs 3360 lbs

0-60 (according to Automobile Magazine):

6 seconds 5.9 seconds

1/4 mile: 14.6 seconds @ 98 mph 14.6 seconds @ 98mph

70-0 Braking: 171 ft 167ft
This proves just what kind of punch the world's famous I6 engine has!!!