One can argue that Amazon is the most popular for ordering fightsticks, meaning controllers with a joystick, but it also has great leverless controllers.
The Hori NOLVA has 15 buttons, and you can remove the extra buttons using a tool that is stored at the bottom.
The Rushbox Lite 2 is lighter than the Rushbox 2, and its switches are also lighter than the first Rushbox Lite's switches.
The Rushbox 2 is a leverless controller that has 18 buttons, which even include a button you can press with your right palm.
There are not many 18 button controllers on the market, and the Mad Catz NEKO solves this problem—plus many other things...
Mortal Kombat players can buy the FightBox R8 with old school Happ parts—or the R8-J edition with Sanwa parts (and a more modern enclosure).
Haute42 continues its journey of making fighting game controllers for every need, such as the E16 Mirrored, which is for left handed players.
We can rave on and on about the benefits of the MS1, but its selling point is its unique right thumb button placement.
The Starburst is a mini leverless controller with 15 buttons, and you can tilt it to more than one angle for the comfort of your wrists.