I sat in a G35 sedan, again, yesterday. It's definitely no M, but it is pretty nice for what you pay. I really dislike the steering wheel though, something about the cover on it seems low quality. Perhaps it was due to the interior color.. I'd lean towards black, and this particular car.. was some non-black weird color.

What I really want:
My M, without a b0rked transmission, with functioning, non-warping rotors, and with windshield washers that work.
Sadly, that breaks down to:
Extended warranty (transmission)
Dealing with broken windshield washers that'll never work right
- Rims to accomodate BBK
- Coilovers to make rims look right
- BBK.. for the BBK!
Cost? About $10k for the three things above alone....