'13 300mp here.
Towmax tires are horrible, I'd get a new set right away before they strand you on the side of the road somewhere.
10' garage can be tight, just double check the dimensions on your toys.
Stereo is definitely weird. My garage speakers are always on sometimes even when the receiver is turned off!
Know your TV limits, my 300mp was a bit heavier than advertised.
Definitely needs the 2nd AC unit in the summer here in the south.
Rubber roof isn't half the issue I thought it would be. I can clean it in less than an hour and only have to do it once a year because I also take it to my local RV place for a yearly roof "inspection". They check all seals/seams, clean it, etc.
We're very happy with the interior overall. Quality and design are great. Only other issue we've noticed is just a toyhauler thing in general. The living room is always going to feel small b/c of the space the garage takes. My friend's class a feels like a palace comparatively. Just depends on what your needs are...