I can appreciate your dilemma as I was just there myself. I used to drive a 330 ci and thought the E46 M3 would be an extension (you say "hopped up") of this driving experience. I was very wrong. The M is just a different driving experience, maybe not better as it depends on your use and needs, but it is very very different. The cost of the E92 M3 is a really concern (think about the tire replacement costs with this new monster too!). I suggest you check out a pre-owned E46 M3 (as I stumbled into) as a good compromise. Still, I hear the 335 is great drive too, if don't want that "tight" M drive (I like it but others find it a bit much for daily drives). I have pre-ordered a E92 M3 but I enjoy the E46 M3 so much I no longer care that it may take a couple of years (given my spot on the list and the options I want).
And, the money you save you put into some good mods if you want to add to the appearance and or performance.
Hope this helps and good luck with your decision.
K.
