I had a 2016 Pioneer 1000-5, then a 2017 1000-5, now a 2020 talon X 2 seater.
Day and night. The stock pioneer is very nice at slow speeds in the trails, like real slow (which is what I like), when compared to the stock Talon. The Talon suspension is definitely stiffer at slow speeds, and the throttle response is even choppier than the pioneer (maybe seat position, more power, stiffer suspension, IDK but it is). At higher speeds, well you know what the pioneer is capable of, and the Talon is on a completely different level. It just sails right over everything. wash outs and stuff that you'd normally slow and crawl through, you can just blast over in the talon.
For me, the slow speed problems with my talon were made up for in rider comfort due to the seats and positioning. But, I still wasn't happy. I removed the sway bar which made it go from feeling like a straight axle honda foreman to a IRS LOL. Then I got the bandit springs on top which was also a big help. Lastly I got 14" wheels and 32" rock-a-billys for the biggest sidewall possible. Drop down to about 5 psi and this thing is now awesome at slow speeds too.
If you only need 2 seats, then you should have already switched haha. The Talon is literally better in every way I think. The only thing that I miss is all of the diff selection that I had in my base model 1000-5. I'm not a fan of this i4WD.
I also kinda miss the days of riding ATVs/dirtbikes and having to pick a good line. This talon has taken some of the work (which I sometimes think is part of the fun) out of trail riding. Now when riding with my brothers (pioneer 700 and yamaha viking), I find myself stopping to watch them make the climbs/decents I just made with zero effort and reminiscing about what it was like in the 1000-5.