We have the Rockwood HW277, twin to the one you are looking at. Ours is a 2010 and we have had it 5 years. We have really enjoyed ours very much. We have not had any real trouble with it, though the low point drains are now leaking. They can not really be reached from the outside as they are back behind the slide out kitchen. We are replacing them this weekend. The awning is just about impossible to roll up with the camper opened up, just too tall - but that is true for all the high walls. We don't use the bathroom, so could not tell you if there are any issues with it or with dumping the black tank. One thing I don't like is the condensate from the air conditioner runs over the back tent all the time, am frequently putting that away wet when running the ac, but again I don't think that is a model issue, that would happen with any of them. I do like being able to access the fridge with the camper closed. We really love the outside kitchen, use it all the time.
I feel very comfortable towing it with our dodge Durango (7000 lbs towing capacity) and have not had any towing issues with it. We do not use a sway bar or wdh.
HTT: "EscapeII" 2016 Shamrock 23WS (current)
PUP: "Escape" 2010 Rockwood HW 277 (gone)
TV: "Bruce" 2011 Dodge Durango V8 Hemi Crew
Just us gals (me, Sis and our daughters)
Traveled 19520 miles and 209 nights in 7 years and counting