Are you a lock person or a no lock person? I'm definitely in the locking category. Steph used to be one of the no lock people, but I think she's coming around. One day I hope we'll have a place off in the woods where we can leave the doors unlocked. For now I figure locking the doors is just an excuse to have rad hardware. Here are a few ideas to get you started.
For bold & simple, try Baldwin's Chicago handle set:
Or go with levers for a less formal entry door. Like the Lakeshore lever set, also from Baldwin:
Emtek's Zeus handle set makes a good budget option:
For an affordable low-profile look, I quite like the round deadbolt from Emtek/Epitome:
I'm not crazy about the key side, but I do love the thumblatch on this deadbolt from Omnia Industries: