Your best bet for the money is probably going to be the Rockton Midi Mate, should be able to pick one up on eBay cheap enough. The good one is the one by Voodoo Labs called the ground control but those are more. There is one now for a $255 BIN I linked below. I have rarly seen those go for less then $325.
The midi control will allow you up to 128 presets. I already have my 28 filled which really is enough but if you are gigging then it would be sweet to tweak for each song.
http://www.ebay.com/sch/i.html?_nkw=roc ... ate&_rdc=1
http://www.ebay.com/itm/Voodoo-Lab-Grou ... 519dd53c4e