That is not a great price for a 2011 model. Look on ebay and you should be able to find a challenger in the high 20s for a new 2011 model. Either that or buy a new 2012 for 32k. I drove a 2011 C180 and the dealer wanted 32k for one with a tower and 30K without. Trailer, lifevests, and bumpers were all included. I have no experience with the Speedster 200, although I would love to drive one. If gas consumption is an issue, I would really think twice about having two engines sucking it down. Bottom line is test drive both and see what works best for you. BTW, when I drove the C180, it was in about 2-3' chop and it rode great.