I've been loving the M3 with the CV 40 1.4 lens but I really needed to try it with a Leica lens. The only 50 I had was an old screw mount Summitar. I got really lucky when I bought it a year ago, the glass is perfect in every way. I CLAed the focus and here are some results, an M3 and a LTM Summitar:
Nice 3D effect I think
I finally tried Costco for developing and I really like it. The files on the CD are over a meg in size. I didn't do anything to the images except bump the saturation a little.