As someone who constantly puts his controller through rigorous labbing, constant competition, I went through many iterations of controllers. OEM GCNs, modded (expensive) GCNs, Pro Controllers, fixed many Pro Controllers… none of these have held up or even come close to the quality, and experience to that of the ProGCCs controllers (v2, v3).

I was fortunate enough to prototype ProGCC 3; constant updates, Q&A testing, in-app browser updates, and an all over the board excellent experience with Mitch Cairns, and his dedication to making this the absolute best controller on the market.

This controller/PCB will be the best purchase you will make, if you’re exploring the options for competitive, or just a solid controller. With Hall-Effect sticks, LEDs, and multiple modes to adapt to the console you play it on—this is a no brainer.

Especially if you can build this yourself, this is the way to go.
I coach, compete, and I would do this again in a heartbeat.

Where to start? I’ve tested the controller with Smash Bros Ultimate, Apex Legends for Switch, and Zelda ToTK. I’d rank my best controllers as follows:
Pro-GCC v3 (best)
8bitdo Ultimate
Nintendo Pro controller
PowerA Fusion Pro (worst)

Pro-GCC v3 is absurdly compatible with other Nintendo consoles, such as GameCube, N64, SNES, and NES. You can also connect to computers to play whatever you want there. The controller config is browser based and readily accessible (even for me on a MacBook Pro).

Taking my controller apart sounded a little intimidating at first, but I needed new thumbsticks in my controller anyways so I practiced by replacing my thumbsticks and buttons with new ones by Extremerate. When the Pro-GCC board came in it was very easy to install for me since it’s the same steps (plus rumble). I’d honestly recommend getting extra screws in case you drop one. Installation is purely mechanical, ie no soldering, just taking screws out and putting them back.

This is definitely my go to controller now for any game requiring precise inputs, traditional or gyro (motion). It’s common to have a backup controller at Smash Bros Tourneys, and so I’ll be making a second Pro-GCC soon for that.

As of late September 2023, firmware development is very active and it’s nice opening the config, finding out there’s an update, and seeing the new/improved features that have been added.

If you’re on Discord, be sure to join the server. I’m naturally curious and even I haven’t had a question that no one there could answer.

My local meetups go crazy with this controller. I had 8 different people try it out with their mains, and 7/8 found their flick back to just disappear (That was their biggest buff about it). I personally didn't find a real difference in connectivity in low interference environments like my college game room (Actually it seemed a bit worse than regular controllers, but then again, I just installed octagon gates too so maybe that had something to do with it) but in locals environment it felt buttery smooth. 9/10 my friends were sold on a nonexistent sales pitch by just trying it out.

This controller has it all in terms of performance and features . It has taken three iterations but now the controller has more than you can ask for

Been using a Progcc V2 since November 2022, and just recently got my hands on a v3l. This controller feels so much smoother, has more features, and is cheaper than the v2. It's an insanely good deal and is leagues better than pro controller for consistency and versatility and far more ergonomic than a gamecube controller. It's super easy to assemble with an easy to follow guide (helpful tip, you don't need the screws in the batter compartment to actually assemble the controller, and not using them means you avoid the risk of tearing the trigger ribbon cable). Easy 10/10.

For a product that relies so much on configuring the settings to fit your play style, the documentation is very poor. Some of the earlier revisions had the details I was looking for. If I went solely off the V3 Wiki, I would have a three star product at best. A web app is not an appropriate solution forbconfigruing hardware. The board has been great otherwise, but for me, I feel this overshadows the hard work put into this new revision.