I recently (this Fall) did the same thing. I went from about a 30 foot travel trailer to a 41 foot 5th wheel.
The good, so far, is the big 5th wheel pulls much better than my travel trailer. By that, I mean smoother and with less "push" from big rigs passing by. It also backs much easier! That's something that surprised me. I like the extra room and I love my outdoor kitchen and the storage in the basement.
The bad, so far, I have to get used to it tracking to the inside on turns. That shouldn't take long. I also may have bought too long to camp in some of the places we used to go. That remains to be seen. It is also much taller so I have to watch for tree limbs I never worried about before.
All told, I love the 5th wheel and doubt I would ever go back to a travel trailer, although I have been considering keeping the old travel trailer just to visit those places where my new 5th wheel won't fit.