We have "13" 28SGS.
No problems (that I could not fix) in two years of camping.
TV is a 2011 GMC 2500HD 4WD EC Standard Bed, Gas.
No problem pulling.
Here are my weights, loaded ready to camp. (CatScale)
Truck w/attached Trailer Wt. 9220#
Truck Wt. 7400#
Trailer pin Wt. (21%) 1820#
Trailer Gross Wt. 8700#
Truck & Trailer Combined Wt. 16100#
The Size, Weight & Layout suit the two of us fine. We camp from Mid March through Mid November (apporx. 35-40 nights). The newer SGS has more features then our "13".
Good luck with your decision.
Allan