After a lot of reading and going to my local gun shop I've narrowed my selection down to a G23. I originally planned on a G27 but the 23 just felt better in my hand even over the M&P .40. I plan on using it for carry and shooting it a lot. After doing some reading on the net I've read several owners have had problems with their 4th generation Glocks. Should I consider getting a third generation instead or are people just focusing on a small percentage of these weapons?