I replaced my RWD Saff with an Evo 8...and hated it.

As others have said, the E46 M3 is a bit boring to me as well. The E92 V8 M3 is a delight to drive though. I've now got a 400+bhp BMW 135i and have to say, it feels like a modern Cossie in many ways. Boost comes on quickly and aggressively but it's still refined enough to drive every day and it's RWD, so a lot of fun when pushed.