There will always be only one REAL M3 and every car enthusiast knows that's the E30 M3.
The E30 M3 is one of the most successful race cars of all time and it has a cult following. Each new M3 chassis comes with more horsepower than the one before it but is also heavier. The last M3 (E90/92 chassis) is almost 1,000 lbs heavier than the first M3! The newer M3s may be faster around a track right out of the box but none of them have ever been able to duplicate that fits-like-a-glove, play-with-me-now feel that you get out of the original M3.
The E30 M3 commands prices significantly higher than those seen in the newer E36 M3 chassis and often higher than the 2 generations newer E46 M3. Here's one E30 M3 enthusiast's Russian dolls-like collection. One day this guy will get a REAL M3 and he will be the happiest man alive!