We purchased our 25.3 in January at Quartsite. We downsized from a 39 ft DP. We just take off and can fit it just about anywhere unlike the 39. We have a gel cover for the mattress and it's great. To fit the slide the mattress is two thicknesses. The shower is the largest of all the models and the two wardrobes are roomy. The gallery is the largest also of all the models. We have done alot of modifications.
We got ours with all the options (15k AC etc). We have not used the outside tv yet but we don't tailgate. The 2017 has a tankless hot water which is nice...we have not ever ran out of the hot water yet. Not sure there are any other differences in the two years (2016/2017). WE get 10 mph and 8.5 with jeep in tow.