I don't know much about this topic at all. Thinking about getting a Brian Moore (iguitar) equipped with 13pin and usb. How much "other equipment" i would need to utilize the 13pin system and how much it would cost. How many different varieties of these units are there? I saw a few of the rolands, some of the sounds seem a bit "cheesy". Anyone have experience with these. Are these guitars compatible with any MIDI synths out there, korg, etc.?