My wife (mdfiregal) and I have a 2007 T-276 SR and we love it. Our two kids (7 & 8 ) love the bunks. We ordered ours and have the sleeper sofa vs. the futon. My mother-in-law camps with us a lot and is very comfortable on the sofa bed. The slide gives you plenty of room with five of us and three to four dogs!!!
The only thing I have found negative is the floor is a little springy and has been that way since new.
We looked at a very similar floorplan in another trailer (don't remember the brand), that a friend worked for the dealer and was offering us his employee discount (it was $9 K less), but after sitting in it for five minutes at the show we knew we wanted SUNLINE
This was just before the factory closed, but there is no doubt I would do the same thing again.
PM me or my wife if you have specific questions, we'll try our best to answer them.
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2004 Dodge Ram 2500 Club Cab 4x4 CTD
2007 Sunline Solaris T-276-SR: Misty Blue/Cherry
2001 Dodge Ram 1500 Reg Cab 4x4 OFF-ROAD