I'm new to the forum. I just traded in my 2005 c230k for a used silver C55 with 800 miles on it. I thought I got a pretty good deal. The C55 is unbelievable to drive. It has a completely different feel than the c230. I was able to trade in my 230k for 29k and purchase the C55 for 49k after a few hours of negotiating. The C55 only came with the premium package and was in excellent condition.