12mm, 21mm (x2- one in Nikon/Contax mount, one in M), 28 f/1.9, 40mm (MC), and 75mm.
I've had very mixed results with the lenses and have resolved to NEVER buy another without testing it on my M8.
12mm Is fine. 21mm is very nice wide open (or close- it doesn't sharpen up stopped down, and gets very dull after f/8) if I'm careful about flare. 28mm? Has an attractive look, but don't look to close- at no reliable use is it critically sharp, surprising me with awesome clarity and color, while on the same card showing me that I missed focus in situations that should have been perfect..
The 40mm has been a Real Pain, but is now focusing correctly (after taking the rear mount off and reassembling the thing). It does focus "past infinity," but is finally accurate on the rangefinder. It's finally becoming a lens I use- the back focusing issues had rendered (sorry: pun intended) it "poor" at best. It was my second copy from the distributor, and set my resolve to never buy a CV lens without taking minimal pictures on my own M8. Also, resolve is set to get a rational return policy with the lenses.
The 75mm front focuses pretty badly. It'll go off with the 40 and 28 eventually to DAG for re-adjustment, though the 40mm is now a low priority to send.