Mace wins for me, then Kylo and Qui-Gons. They all seem slightly more functional in my head cannon, as they have somewhat of actual grips on them, instead of just being smooth metal. Sure the force helps them grab on to it perhaps, but I don't know enough about SW to know. Others that have grips are higher up as well, and for me green wins over blue.
Also, I hated Kylo's at first, but now I love it. Due to it seeming like it's overclocked and almost unwieldy, I like to think that the force helps him subconsciously control it, which is why his swings have so much weight to them. Like, if you put the lightsaber on the ground and turned it on without holding it, no force applied, it'd flop around like a wild wacky inflatable flailing arm tube person