I only have firsthand knowledge of the G19; I've had no problems with it at all.
Like you I've heard about problems with some of the other calibers, especially .40 S&W, but don't know how prevalent they really are.
If I were shopping for a 10mm, I'd look for a used Colt or one of S&W's pistols or the M610 revolver. The 610 is really nice because it shoots .40 and 10 mm. It weighs 50 ounces (1400 grams), though
But that's just me.