The official pro one?

I was looking into one yesterday as the joycon are too fiddly and aren't too comfy in the grip they provide either. The 8bitdo ultimate seems to be the best reviewed controller for the Switch, from watching various youtubers reviews. Essentially just looks like an Xbox controller but with hall effect sticks.

If you prefer the left stick in the wrong place and aren't bothered by potential stick drift down the line, they also have a cheaper offering. Even cheaper too if you don't want the translucent colours.

Just seems like the days of your 3rd party controllers being unusable chunky crap are pretty much gone. Even the cheaper ones around £15-20 seem fine and reasonably comfy to use.