Nothing wrong with an FMX except it's heavy and a has lot fewer pieces available to modify it then a C4 or even an AOD. If you can find a good C4, that might be the way to go. A good (strong) AOD is a lot more money. I'm using a TCI modded C4 with a Lokar tho I would have preferred a 4-5 speed. My problem is that I'm 6'4" tall and don't have much leg and foot room for a third pedal in my '31