Hello all, I was looking to use my guitar as a controller for Reason. I was going to get the Roland GK-3 and their GI-20 GK-MIDI Interface. Has anyone had experience with these products? I am worried about accuracy and tracking speed as compared to a keyboard controller. Also, if anyone knows of superior equipment to get instead of the Roland please let me know. Thank you.

IMO I wouldn't get any of these controllers, it'd be waaay better to rewire with ableton live or logic and record your guitar in one of those programs.

Especially considering the price you'll pay for a midi guitar or midi controller for guitar, you could almost buy Live with all the instruments for the price I've seen the rolands for

or learn a little keyboard...
I've used the roland guitar controller, I don't think its very good in terms of midi sequencing for a computer. Its also very expensive.

or... just get ableton (buying or otherwise) hook up your guitar to your mic slot using a 1.7 adapter (that's what it is right?) record using ableton, voila.