I bought my gen 4 19 just days before Sandy Hook happened. I've only had a chance to take it to the range 3 times so far because of ammo (now I've got some extra to use so I'll be able to go more often). I love it as well, it is so much fun to shoot. I blow through my self-imposed limit of 150 rounds in no time. Its my perfect concealed carry weapon that is good for the range as well. I really really love shooting it.
Carrying Federal 124gr HSTs in it they seem to operate well through the gun, videos I found online indicate they will put holes in bad guys.