I just went through this and decided on a new '08. They are discounting to invoice or slightly over invoice and have killer lease and finanicing rates. With little to no change between the 08's (main change being the Sedan's tailights - which is no big deal to me) the '08 was the easy choice for me. I checked out BMW inventory on the net for both NoCal and SoCal and there are a ton of existing new M3's on dealer lots, so you should be able to get pretty much exactly what you want. I found my exact car (except for the rear PDC) which given the killer deal I was getting I could easily live without!
Good luck but check out the 08's too
