We've had our 321 for 2 years and love it. Plenty of room for the kids and others if we want to bring tag alongs. We love the ability to have the kids sleeping in the bunk area and close the door to watch a movie. I've towed it with a 2012 F150, a 2014 Ram 2500 and a 2016 F150. With the Equal-i-zer hitch it tows well with all of them. I'm going to be putting airbags on the F150 just for some added stability but it's still within its limits.
I wouldn't hesitate in buying one again.
2014 Surveyor SC321BHTS
2016 Ford F150 Eco