Have you ruled out hybrids?
The reason I ask is because you get the most bang / Square footage of usable space verses weight. We had a 2005 24' hybrid
that was 3900 dry but also had a small couch slide that really opened up the floorplan. It had 26 inside cabinet doors or storage spaces. Our new 2013 hybrid is 25'
and 4300 dry with the couch and kitchen in the slide.
I might sound like a broken record, but a unit with a slide really opens up the inside. Your going to have to hit a number if dealers or a RV shows to see what is out there.
After tent camping for 10+ years we decided to look for a used pop-up...didn't see used ones I thought were worth the price at the time (1999). So we bought a new Coleman back in 99'. Loved it so much decided to buy another new Coleman in 05', but once we popped our heads into a hybrid we were hooked. First here was a 19' foot one my DW liked...OOOOahah..then we saw a 22' one that was even better, then once we saw the 24' one with a slide and all the cabinet space and counter space...that was the one. At first we wouldn't think we would use the shower, but my wife soon found out it was nice to use your own shower and then get in her your PJ's. So that is why the Aerolites with their 52 gallon fresh water tanks are a must have for us.