My only concern with Contax is that they appear to not be actively investing in MF or 35mm--only Digital P&S. Also, I have heard-but not experienced--that there repair department in the US has cut back so repair times are going longer.
Leica is seriously devoted to 35mm and is coming out with new products.
Don't get me wrong, the Contax is great (I own an N1 and a 645 and love them both). If I didn't have a great Nikon F2-AS and F2n, I would buy a Contax manual focus 35mm.
Just my two cents.