I put a set of cheap Mastercraft Courser AXT on my DD Suburban and they do just fine for not a lot of $$$ and they come with a 50,000 Mile Treadwear Protection Warranty.
http://mastercrafttires.com/Tires/Li...urser-AXT.aspx
Question becomes, how many miles a day and what are you willing to put up with in regards to quality?
Enjoy,