The VX is NOT for everyone and TOD does not cure improper driving technique. True 4WD (LO) is typically used offroad in difficult traction situations. Maybe you need a 4Hi Yukon (or maybe an Assender) for all your friends to pile in and you can suffer the cost of 4WD HI all the time if you really need it. Oh yeah, a VX can take a Trailblazer BTW....