Sometimes, the brand of the fighting game controller that you choose is the defining factor regarding if that controller is great.
If you are looking for an arcade stick that has Sanwa parts embellished by LED, the Evangelion e:Project Arcade Controller might be for you.
The SallyBox is a mini controller with a layout that allows you to use it as a hitbox or as a WASD controller.
AllFightSticks provides DIY cases in different sizes, such as the 15.5" Prototype Steel Aluminum Hybrid case.
The GRAM Slim is one of the GRAM Digital Controllers, and it runs on the UMS Ultra Bubblebox WASD firmware.
The KeebBrawler-01 is a mini stickless controller that most notably has a wide jump button and unique attack button layout.
The Sonicon TitanStrike Arcade Fight Stick has Sanwa parts, an OLED screen, customizable artwork, and more.
Certain Deth is a Detroit-based outfit that provides custom enclosures and builds with key, button, or joystick directional inputs.
The Neobox is an enlargement of the open source Flatbox. It also spares you from building a Flatbox yourself.