I concur with lumpermsn above, as both my X-Ten and M&P M2.0 4.6" 10mm's have been excellent shooters and I have not experienced any of the issues/problems some have stated. I can't speak for others, but mine are both good to go.
Granted, I loaded all of the magazines w/ 15 10mm snap caps each for 2 weeks before use (8 mags for each), completely stripped/cleaned/lubed each pistol, and thoroughly broke-in both pistols w/ 1,000rds (180fr & 200gr FMJ and JHP ammo) before I used 220gr ammo. The only thing I'm doing "different" is that I'm only loading 14rds in my X-Ten mags b/c I don't like the idea of ham-fisting live rounds into a mag (even w/ a Maglula), plus I don't get FTFeed issues with it. The M&P M2.0 is good w/ 15rds and is a bit more smaller for my woods gun use.
Both the X-Ten and M&P M2.0 are very accurate and they both keepers in my collection. I'll eventually get the FN510 in Black, which means I'll also need another hammer fired 10mm soon as well (Colt Delta Elite Rail) to balance the two other hammered 10mm's I have (P220 Legion SAO and a Kimber Rapide). Hoping for a FNX10...