My first Monster Hunter was Tri. It's hard for me to have a favorite because all of them have good and bad things going for them.
I like world and rises improvements to some of the weapons and how streamlined they are. No more grinding for silly things like paintballs anymore. Good.
The changes I don't like? I very, very much dislike the clutch claw and wirebugs being used in combat. The controls are bloated enough, and now you're adding this bullshit on top, no thanks. It also takes a bit away away the main point of weapon choice, that is "do you want to be mobile and hit lightly a lot, or do you want to be slow and hit hard." by making everyone fast paced with the wirebug/claw. The ability to jump around and easily mount used to be the unique selling point of the Insect Glaive. I noticed in Rise I could almost never mount with the glaive. Nerfed to hell so people use the wirebug.
The last change I'll complain about is giving bosses big arena wide instant death fuck you unblockable attacks like Eschaton Judgment. I wouldn't mind if it was a gimmick for one monster, but almost every endgame elder had it. It felt like false difficulty.