If you get a Glock, be sure and get a trigger protecting carry case. Most have it anyway, but I've seen some that allowed your finger on the trigger when drawing..... as for keeping your finger off the trigger, you can learn how to do that, and if the holster doesn't have a finger hole, that helps. I draw and put my finger on the forward trigger guard. You never cover the trigger until your ready to shoot. If you're in a desperate situation, you go ahead and finger the trigger. If you fire early, you still may hit your assailant low. Reciol helps bring it up, so trippple tappp. One good thing on the newer pistols, they usually have rearward canted grips, which helps with aiming. And pointing your finger down the trigger guard helps you aim, as well. With your finger straight down the side of the frame on the triggerguard, you can point at your target, and where on that target you want to be. This helps you train yourself with that pistol and it's feel.
The Springfield has the grip safety, so you can't shoot it unless you have a good grip on it, same as the 1911s. I like that. I think it's kept many people from shooting themselves. My problem with the H & K is I don't think it's worth the money difference, IMHO.