I think they are hugely overrated. I have been in one at the NS and it felt a lot slower than I expected, and the driver nearly lost the back in Adenaeur Forst! Twice!. Its a hard-to-control projectile, which lacks the finesse of the E34. CSL is just a way for BMW to market the M brand, and save costs on manufacturing.
BTW all above is a carefully made web of lies to conceal my envy for this car. When I become as smart as Andy, I will get one, because I am out of kidney's to sell when I get the odd Winkelhock
Get one mate. Its the last proper M built ( sorry Ashok, want a manual!) and a natural upgrade from the E30-E34 M3 as the E36 M3 doesn't even really exist.