If you want it to look real nice and not spend too much you can do what I did to my ST. I had 2.5 inch leaf springs added and TT. That all sat on top of my BF Goodrich All Terrain TA 265/75/16's. It gave a nice look over stock, a little more clearance, and didn't kill my wallet. Actually, Goodyear came out with a new tire called Silent Armor. It's Kevlar reinforced. Supposed to be real nice. Here is a pic of my ST down at Gettysburg this past May. This pic is with all the above mentioned stuff.
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I unfortunatly sold mt ST last month. I replaced it with a Jeep Liberty CRD (Diesel). I'm already modding that thing all up. Next week it will have a 2.5 inch lift with bigger tires. In the next couple of weeks, I'll post a few pictures of it. We love it so far. Gets WAY better gas milage than the ST, thats for sure. One thing though, I wish I still had the seats from my ST. They were probably the most comfortable seats in a vehicle that I have ever had.