Yamaha FC-7

There's no way to change the polarity of the TRS jack that is directly soldered into a hardwired cable. If your hardware can change polarity, then you're fine. Otherwise, consider one with either switchable polarity, or one that has just a jack socket on the unit, and you can shimmy up a Tip-Ring crossover cable of your own should you need to invert polarity.
Otherwise, lots of travel, solid, and a good base to grip the floor well.

I just want a TRS socket instead of a cable. Please. Always having the cable attached is a pain, and it's destined to brake.

Quite noise, not stable (moves when you press it), did not transmit all expression values properly, had to send it back. A bit disappointed with Yamaha.