I have had my 06 4.8is since 06/2008 and love it. Absolutely no issues so far. I bought it for $38K with 18K miles from a smaller non BMW dealer, it was a lease return and in new condition. At the time the BMW dealers were selling certified 06's for $46K. You will love the 4.8is, better than any car I have driven in terms of handling. I have an MB 01 E430 Sport and haven't driven it since I bought the 4.8is.

Mine has all the options except the sliding floor and hitch. It had the running boards and bluetooth as well. Also the folding side mirrors.

Good Luck.