A 030/50MHz is quite sufficient for me, as it can play the majority of Amiga games through WHDload and, of course, Doom! In case I need more CPU power I'll turn to a 40MHz 68040 as I haven't found anything that could run on my 50MHz 68060 and couldn't run on my 40MHz 68040! So, pricewise I'd say the 68040. These days I'm using mostly my 68000 A500+ and my 25MHz 68030 A2000 so I've got the feeling that anything above the 68030 can be tooooooo fast! :-D
