I use the FCB1010. It has 2 Expression type of pedals and 10 additional foot switches. Each can be programmed independently. Awesome pedal for arranger keyboards and more.
The FCB1010 has a lot going for it at a low price point. I have one myself, but I replaced the factory eprom with an uNo chip, which allows more functions and easier editing. However, it is still limited for my needs in that it allows only 5 CC messages or something like that for each switch/patch.