I'm not exactly the right person for this as I'm a casual fan at most, I played the original trilogy lightly. I couldn't get into it enough to finish them (one day tho) and I thought the MP modes in Judgement was really fun. But I was pleasantly surprised by 5, story really pulled me (I beat it). Gameplay is always top tier in Gears and I even invested a decent amount of time in the MP (and I didn't totally suck!). So for me it's Gears 5 hands down, and damn Coalition really cemented themselves in the Xbox First party Studios lineup.