We have a suburban and we love it. When we go on long trips we take out the back seat and have more room for luggage, etc. We found our suburban online and we had a wonderful experience with the car dealership we bought it from. Our suburban was used, but it was upgraded galore. It has 20 in rims, a dvd player, leather seats, heated seats, cd changer, etc. etc. and we bought it for $27,000! We told the dealer what type of payment we wanted and we got it! We also had a trade at the time that we were upside down in. The dealership we used was Chapman Lincoln Mercury on McDowell in Phoenix.
We now have 135,000 miles on the suburban and it still works perfect. We have kept up with filter changes and oil changes and it gets great highway miles. We have not had to have any major repairs, just a few fuses replaced, which were free by the way from the dealership:) We used the Kelley Blue Book website to find our car. Hope this helps!