Im in the market for a new glock. I have narrowed the decision down to the model 19, 23, 29, or 30. There are the obvious advantages to each due to size concealability firepower and capacity but does anyone else have any first hand pros/cons for any of the above models that I may not have noticed or thought about and where do you weigh in on the 9mm, 40S&W, 10mm and .45 ACP. the gun is going to be a double dute piece for CCW and pleasure shooter. throw me some of your knowledge. thanks in advance.