Hi, we are on our 2nd 5th wheel in 9 yrs. I agree with your conclusion, lite usually does mean lower quality. As for brands, unfortunately all are going to have issues. The best advise I have had is buy used if at all possible, have the rig checked by a reputable rv center. One of the better bunks I have seen are the open roads and reflections. You maybe able to find a good used one on rv trader. As for towing, a very experienced rv'er told me try to stay 2K under your max towing weight. IE: my diesel 2500 is rated at 16K, my 5th wheel completely loaded is under 14K Hope this helps.
