I like my KSC G19. I've had mine used for over a year now and I'm still satisified with it. I have relatively small hands, but the G19 fits nice and snug into them. If you do get the KSC G19, make sure you get a metal slide for added durability and looks. Also, I suggest that you get first-hand experience with all your options. That way, you'll know what you're getting yourself into.
In the end, its all about personal preference. You go for what you want. That's the only way you'll be happy with what you get.