MD and NCX:
Just go drive it. I'm with the others, I was very impressed.
I went back to the dealer this weekend, and reviewed my plan for a new 335 coupe. The plan is Space Gray, with the jade two tone interior (special order with Space Gray), MT, sport, premium, 19", 4 17" winter wheels and tires, PDC, etc. No nav or step, but every other option. Also a 2007 X3si (we get both engines here in the GWN) so that I can still hang out on X5 World. Ti AG over black leather, not so many other options. Thinking about premium, but not sure we want the pano sunroof.
I read some more about the XEDE non-chip, with another 50 hp at the crank, on 93 octane. I figure it will only risk the engine if one actually uses the available power

. That's my story and I 'm sticking to it.
Anyway, just go drive it.
Jeff