Thanks all, been reading up on them, and although mechanically similar they are a different animal completely, I think the VOD would soon annoy me. So gone off that idea, and upped the budget and taken a completley different direction and good as done a deal on a E46 M3 coupe SMG, and should be picking it up Friday
It gives me the refinement and performance I was looking for but been a little heavier on the pocket.