I wanted to upgrade from Kurzweil's CC1 pedals because they have a pretty short travel (15°). Yamaha FC7 is probably the undisputed champion of expression pedals for quite a long time now - and I say it's definitely deserved!
The only thing that could be considered a negative with this pedal is that it uses a 50 kOhm logarithmic potentiometer, whereas almost all other expression pedals use linear pots (and usually 10 or 20 kOhm). So there will need to be some soldering in order to reduce the impedance of the pedal so that I can use it with my Kurzweil PC3K8 keyboard. No matter - an easy job to do.
Just get one. Get two. Hell, get as many as your MIDI controller can connect. Be Vangelis. Enjoy life!