I have used this basically for business use the past 2 years. Towing a trailer and snowplowing with a BOSS plow. 4 wheeling is great because of the locking rear dif. It is quiet on the highway. I upgraded the wheels to 18" purchased from GM Parts.
Reliability. Locking diff. I have had no service issues. Quick "bump" key starting is great and the GM auto lights are also above and beyond the slow to catch up imported brands.
Towing rating was increased in 2009. And larger wheels are also needed for the 2007. Mileage could be better. It needs factory remote starting option.