Hi folks hows tricks??

Just after a bit of advice on the C36 AMG really for my old man. I have had the pleasure of driving a C36 on many an occasion when I was 19!! due to my boss at the time having one, but that was when it was new, back in 1997. Just wondering how they have stood up to the test of time, any major probs with them, and what they are like compared to an M3 of similar year. (apart from being much cheeper!!) Any advice would be great thanks.