We have the 3950 and so far its just super. There is one defect I have found, with the slides in, there is a very large gap open to the outside at both bottom corners. I found this by accident, just happened to go into the trailer late afternoon and the sun was at the perfect angle. One of the dog's toys had fallen off the stair into the corner and I reached to get it and found the sunlight glaring in the lower front corner, checked the rear and same. Perhaps there is a rubber bulb/gasket or something that the room should come up against when in the closed position. I have made the dealer aware of this but haven't had a chance to take it in for a look. This is not just a small opening, I am able to get two fingers completely outside! Would like to hear from other 3950 owners if they have the same situation.
