You will a dozen different opinions...each 'brand' has good & bad units depending on the Quality Assurance inspections and the worker. I have a Forest River product and have been happy with it. If I was in your shoes I would buy used, have it inspected by an independent RV Tech and stay in the 24-28' range. I will never buy another 'ultra-lite' again. And with that size and today's F150s you should be able to find something used and within the weights you need.
Good luck and just be cautious of too good a deal!
