We bought the 2015 176t and although we haven't taken it on the road yet, we are very happy with our decision. It seems well-constructed and nicely laid out. The kids like their bunk beds, but at 32" wide, I don't think they'd feel cramped even for a moderately-sized adult. I'm also looking at solar, but think that if I buy something with different plugs it might be just as easy to clamp the cables directly to the battery to charge. Currently, (pun intended) we are looking at the 100W Renogy panel on Amazon and will probably pick a decent solar charge controller and try to mount it in a weather-proof junction box somewhere near the battery. I'm considering building a little adjustable stand to mount the panel on the ground when we set up camp. The only issue I'm trying to figure out is where to store the panel when we are not using it - it's a little too wide to fit in the pass-through storage. May need to build a storage case at the front or under the rpod.
Good luck with your decision!