I have the 8BitDo Ultimate 2 Bluetooth, GameSir Supernova, and GuliKit KK3 Max. I use these controllers when playing emulated retro games, so I thought I would share my thoughts on them if anyone is looking to pick up one!
All three use magnetic sticks and triggers (TMR or HE), have trigger locks, gyro, good rumble, and are multi-platform! I believe all three let you change the settings using keymaps on the controller itself. They all let you disable the lights around the sticks if you prefer that. These controllers all use membrane ABXY and d-pad, since I prefer those over clicky microswitches.
8BitDo Ultimate 2
Pros
- D-Pad is very "free" and it's easy to change direction (this could also be a con depending on the game), it feels very nice to use
- Only one of the three to use TMR sticks, which I hear are more accurate than hall effect while consuming less power
- The nicest looking controller with the Yellow colour in my opinion!
- Has a charging dock that doubles as a USB dongle extender
- The switch to enable trigger lock is the easiest to access of the three
Cons
- Definitely the cheapest feeling build quality out of the free
- Confusing naming scheme: the "Wireless" looks to prioritise PC (with Xbox ABXY) while the "Bluetooth" prioritises Nintendo Switch (with Nintendo ABXY). Additionally, the Lime Green colour is exclusive to the "Wireless", while the Yellow colour (the one I have) is exclusive to the "Bluetooth"
- On that note, I can confirm that the "Bluetooth" works with my laptop running Linux!
- ABXY layout is not (physically) interchangeable
- The grip is not flared out like the other two, which many don't like. I'm okay with it, but I do prefer the flared out grips of the other two
GuliKit KK3 Max
Pros
- Interchangeable ABXY (requires a separate keycap puller-like thing)
- In my opinion the best ABXY buttons, since they feel tactile while being relatively quiet
- D-Pad, although still easy to change direction, it's more intentional as a little more force is needed to do so compared to the 8BitDo. This can be good or bad depending on the game
- Removable back paddles are really neat, and they are made of metal so they feel pretty good
- Includes a neat case that exposes the charging connector. It has slots for a button puller thing + the dongle. The keymaps are also written on the case, which is useful (but some of the symbols are ambiguous)!
- The most solid feeling hard plastic of the three
Cons
- Wireless connectivity latency is terrible with both the included dongle and Bluetooth. It's fine if I am close to the laptop, but it won't work well, for example, in a living room PC setup.
- The back paddles can't be stored in the included case
- QC is reported to be not great, I got a good unit but many others have duds
- The lights around the sticks can't be changed from the default colour, unlike the other two, since they are instead used to show what settings have been changed (but in my experience this doesn't really help all too much since it's just a small hue shift)
- Due to the shape of the ABXY buttons (the rightmost button is very deep, for example), they aren't perfectly interchangeable. You have to switch between a set of Xbox layout and a set of Nintendo layout buttons. Both are provided in the box, but it makes it more annoying to switch between the two
GameSir Supernova
Pros
- Interchangeable ABXY that does not require a special tool, as the faceplate is removable
- D-Pad is somewhere in between the 8BitDo and GuliKit in terms of "freeness"
- Also has a dock that doubles as a dongle extender. It's slightly better than 8BitDo's, since the dongle is behind the dock rather than below it, making it easier to access should you need to
- Rubber grips make it feel nicer in the hand to hold
- The triggers are the nicest of the three in my opinion
Cons
- The trigger stops don't have a microswitch, unlike the other two. You might prefer this, but I think it makes it less of an instant trigger
- Rubber grips might have longevity issues, haven't had it long enough for that to pop up
I personally use the GuliKit KK3 Max, since I sit close to my relatively small 14" laptop, so latency issues aren't a worry, and I don't need the charging dock of the other two since I won't be using it for a console-like setup. The 8BitDo controller is the nicest looking (the yellow colourway is awesome!) while also being the cheapest feeling, and I don't like the tighter grip as much, so I opted to give it to my littlest sibling with tiny hands for playing fun games on the Switch. The GameSir Supernova was given to my other little sibling who has broader shoulders than me, and they enjoy the charging dock a lot since they play games on their PC.




