What are the best single joycon grips as of Dec 2018?

With the release of Smash, wanted to gear up and get ready for local 8 player action. I'm already set w/4 pairs of joycons, so will be doing 8 player via single joycons. Back when the Switch launched, I went with the Surge grips. I have 2 pairs of those (so all set for 4). Need to buy 2 more pair, but wanted to see what the consensus was on what the best grips are as of today? I heard some people didn't like the Surge grips cause they were bending the joycon rails, but I never had that issue (admittedly, I don't use them that often, so either that or maybe luck?). There's so many different brands/types now, so not sure which one to purchase. What do you guys recommend (with Smash in mind)? Should I also swap out the Surge grips while I'm at it? (I also have the joycon battery packs, which work well w/Arms, but probably not so much when the joycons are used sideways, and the mario kart wheels.. so looking for something like the surge or fastsnail grips in terms of form factor)