I'm thinking of purchasing a used Highlander Hybrid. The 2008 is a bit out of my budget, but I can get a 2006 Highlander Hybrid Limited fully loaded for $29,000. Thoughts on the 2006? It has roughly 48,000 miles on it and the dealer is going to give me a bumper to bumper 7 year extended warranty. Any problems with the 2006 that I should be aware of? Thanks!