I haven't used both but I've ridden with two guys that have them. First guy has a little trouble pushing through turns and has to do an extra k-turn on occasion, no biggie.
The other guy's TL pops with such intensity that I swear he blew a CV joint into an alternate universe.
I'm mechanically sympathetic and there's no way in Hades you're convincing me that that's ok, nope, no way.
Third guy, a member here and a pretty extreme rider bought a TL before he even got his Talon home and still hasn't put it in because the i4wd works so well.
4th guy has both a Pioneer and an i4wd Talon, he's an extreme rider, well into the insane spectrum - He rides in a large group including both Pioneers with locking diffs and i4wd Talons. There are just some places that you need a locker and the Pioneer with get to those places without abusing the equipment as much as the i4wd (if he wants to get to the same places ... and he does 😒).
Me - I'm happy with the i4wd in my Talon (14k miles) - although I know there will come a day when that extra little bit will bite me in the azz.
If you're a lunatic, nothing beats a locker.