Been playing Gears since Gears 2 but I have played every gears title. Ranking the multiplayers from best to worst it would have to be:

1.Gears 3 (biased opinion because this is when I really got into gears)
2.Gears 2 (another biased opinion because this was my first title in the series)
3.Gears 4 (after the 2.0 changes)
4.Gears 1 (love how goofy the multiplayer is with weapon sliding, bullet delay, etc.
5.Gears 5 (this might change in the future. as much as I love the new gears it still needs polish like 4 did when it dropped)
6.Gears UE (just didn’t recreate the atmosphere gears 1 had for me. biased opinion)
7.Gears Judgement (the worst title in the whole series, took away key elements to the game to make it more call of duty esc. I’m pretty sure everyone can agree with me on that.
All in all I love Gears been a fan for a long time and have always anticipated every title, sadly even judgement until I played it lol.