Just received my M2 and Canon Serenar Back from Youxin Ye. Turn around time was about a week and a half! His prices were excellent compared to some services i looked up here in SoCal. Very pleased with his service/communication and i highly recommend him! Now i just need a better M adapter for my screwmount lenses. The cheapo one i bought doesn’t mount the lens correctly and brings up the wrong frame lines. Doh! I am thinking about getting a dedicated M lens, Carl Zeiss C-Biogon 35/2.8 or the 50/2 Planar….maybe a 50/2 summicron!? I’m already hooked without having shot a roll through the M2!