The Tradewinds was a popular, mid-priced diesel pusher in the late 90's and early 2000's. I know at least one member used to have one (he traded up to a newer one), so maybe he will offer some advice. National RV went out of business in the 2009 depression, but the chassis is a Freightliner so no problems with chassis/drivetrain service and parts. Appliances and such are industry standard items as well. Should be a good choice if it has been well cared for.