I've got an older M40, an S9, and a new M40-A1.
They are amazing guns. In thousands of rounds, I've only had a couple FTFs, and those were in the first hundred rounds or so. Easy to hit with, and the bore axis reduces felt recoil. My .40s feel like 9mm. The 9mm feels about like, I don't know, maybe a .32 or so.
Go for it. For the quality of the gun you get, I think these are the best value on the market right now.