Welcome aboard and thanks for sharing your uncle with us. He was a good guy and is still missed.

As far as a CCW pistol, a lot of it comes down to what you feel comfortable with and if you have any size limitations or not. You've been given a lot of good suggestions above. At a minimum, pick up one of each at a gun store and see how they feel in your hand. If you have friends who own any of these guns, see if they'll let you shoot a few rounds downrange. That should give you a good idea of what you shoot best and what feels good in your hand. You may find the double action first shot on some pistols isn't inaccurate for you and that could also influence your decision.

As far as Glock pistols go, they are a simple, accurate and reliable pistol. A majority of police departments issue Glock pistols for these reasons and the generally lower costs for purchase & maintenance. I've carried Glock 17, 22, 23 & 30SF on duty in open carry holsters. I've carried each of those and a Glock 19 in a CCW carry (mainly in a gun bag). The Glock pistols are a little wider than some of the other guns but they are solid performers.

Something else to consider is how you plan on carrying your pistol CCW. If you wear it in a belt holster covered by a shirt or jacket or in a gun bag, any size pistol will work. If you're carrying it in some hidden kind of pager style holster or in your pants pocket, you'll want a smaller pistol. You can carry any size pistol in a shoulder holster (Miami Vice style) but that is the slowest method of CCW when it comes to drawing the pistol (aside from an ankle holster).

Hopefully this gives you a little more to think about in choosing which pistol to buy. Good luck and let us know what you decide to buy.