Depending on how it is optioned my belief is that you will not find any difference from an 06 to an 07.I have not heard of the problems that you are refering too,Again these are just my findings,but i have not seen the prices with that much difference.There is of coarse one less year of depreciation and also potentially 1yr plus of factory warranty left on an 07 which for me would push me towards the 07.but not for 6-8k more.Again look at how it is optioned look arround alot get what fits your bill and if its an 07 good.if not still good...Hope this helps and i'm not rambling....