Consider the Kwikset deadbolt with the numeric keypad. You can set it to automatically extend the deadbolt after some time interval, it's now self-handing and there's an LED to let you know the door's locked. I have the older model, which is great, but the newer one is smaller on the interior, easier to install and works fine. The key cylinder for Kwikset can also be mastered to any suitable key by the installer with no need for a locksmith.
I also second the thought that if a burglar wants in, he'll get in. However, the goal is to slow them down and force them to make as much noise as possible. With enough hassle facing him, he'll just go next door. With that in mind, I install my deadbolts and strike plates using long, hardened screws that go well into the crip. All you need to do is be careful to not overtighten them and warp the casing.
I once thought of Schlage as being good- better than Kwikset- but changed that misconception after installing 5 of their exterior door sets and deadbolts on my home in Raleigh. Within a couple years, the brass had turned black. I contacted Schlage and their attitude was, "Tough Luck, you're out of warranty. How about buying our NEW coated brass sets, which will never darken?" The words, Push, Cram and Shove came to mind.