I've been looking around the site for a few months now and have seen some great rigs. Although I'm not in the market yet, I think this SMB would be at the top of my list. Brief description--'05 SMB RB-50 layout, 6.0 PSD w/63K miles, dark green exterior and matching single axle trailer). I originally found it through Auto Trader. I don't have any affiliation, just sharing.
Here's a link:
http://www.southbayford.com/vehicle/200 ... 70687.html