I have the C9 and Key9 - for a pedal, they are amazing. My biggest complaint is that switching the key effect on cannot mute the unaffected output. Had to add a pan pedal to make them gig-useable.
Guitarsynthesizer à la Boss SY-300, Electro Harmonix B9, Key9, Mel9
-
-
The EHX devices look very cool, but they would be ten times better with midi functionality. It's very inconvenient to be limited to one sound in a song, unless you buy several of these things and stomp around on them.
-
On a related note, has anyone tried a Fishman TriplePlay? I'm thinking of hooking up one to my guitar to trigger synths. Seems really handy and I hear they track better than a GK3. Only thing is you'd need some sort of interface to translate the wireless midi via USB into a normal DIN for interfacing with other gear.