Hands down a 5th wheel pulls better. The backing is more difficult at first going from a TT to 5th, but once you learn how they react it is not much different. A 5th wheel reacts much slower than a TT but you can get a much tighter turn when backing. It is also quicker to hook the 5th wheel up compared to the Equalizer I had on the TT. As far as turning and cornering they do track a bit different, but either one you have to allow for wider turns, so that is not a huge deal.
I had a 2017 TT. 7200 pounds loaded, 32'. My new to me 2015 5th is 14 gross (have not weight it loaded yet) and 38'. I had an Equalizer hitch on my TT. While it pulled good most days, the windy days are what makes pulling interesting for sway. With the 5th that is taken care of.
For those that say bigger trucks take care of that, I disagree. I pulled the TT with a 2016 Chevy 1500. I was within my ratings. I now have a 2019 3500 Duramax. I have pulled the TT with that as well on a windy day. While the sway was handled better by the bigger truck it was still definitely there and just as uncomfortable in the bigger truck on the interstate.
The cost of owning a TT and half ton is less than a 5th wheel and one ton diesel. Now that I have had both, in my opinion, I would never pull as long of a 5th wheel that I have as a TT simply because of the sway issues. To me the 32' TT was as long as I would go.
As long as your set up is good, your within your ratings (If you care about that) get the trailer and floor plan you like. That is the most important.