Check out these guys
http://www.desertrat.com/tjm/tjm_index2.htm
They have some pretty damn good setups, but they are a bit pricey.
Basically you want a grill gaurd that is attached to the body as well as the front. The ones that are just attached to the bumber will do more damage than good. Hitting a deer is a lot like hitting a small car. They can do some unbelievable damage! I had cheapy one on my K5 and it was mounted in three places on the fram and two on the front bumber, and that damn thing was indestructable.[addsig]