I am getting very close to getting a new Glock for concealed carry. I really love the 9mm, and have carried one concealed for many years. I have been carrying the S&W M&P 9mm for some time, and decided to trade it in for my S&W 442 revolver. It is so much lighter in weight for the summertime. I am missing my higher capacity pistols now for certain occasions. I have been reading about the difference between the Glock 19 and the new Generation 4 models. Is one really better over the other? Should I be considering the newer model over the other?