Newer high side popups are getting to be too heavy to appeal to the market they are designed for. That being light weight and towable by smaller vehicles. A Hybrid trailer offers the benefits of a hard side while still having the tent beds for increased sleeping space and 'campy' feeling. Ours weighed about 3800lbs dry, 5000lbs fully loaded and was easy to pull with our Durango or small truck.
Prior to that trailer we did have a 2000lb popup pulled by a Nissan mini-truck. I'm seeing today's popups weighing in at 3000-4000lbs with only a few in the 1500-2000lb range. Hybrids make more sense unless your tow vehicle is very limited.