Just my opinion but get a 5.3 4x4. I have nothing positive to say about owning a tbss. They have glass transmissions (AWD at least), the oil sending unit easily clogs/sticks and starves the engine of oil, the ABS units are super sensitive and will randomly put the thing into limp mode on the freeway, Stabilitrak causes more headaches than anything, and only having 4 gears is a joke. The trans felt like it was either at too low rpms or too high, and it couldn't make up its mind which to be in.
This was all on a stock one though. Upgrade a few bits and I'm sure they're more reliable for daily grinding. They are pretty quick and fun trucks when they work. If you're stuck on a tbss I'd get a RWD model and shoot for 2007+. '06s (first production year) seemed to have all the issues. Or just get an SRT8.