I have a 2005 Fleetwood Triumph 369 BSQS with walnut cabinets we bought 5 months ago and so far we like it. No real problems but it is my opinion that the axles are a little undersized given the weight of the trailer. I have not towed it far yet, We used to have a Designer Jayco that we took 80,000 miles with zero trouble, but we wanted to move up to a more luxurious couch. This has everything we wanted including a 7 KW Onan generator.
The aluminum frames is welded and screwed to the subframe according to the Fleetwood literature.