I can see the appeal, but frankly I don't like the idea of fret light. I think it makes you into a worse musician overall. Its like being spoonfed where to put your fingers without really know why you're doing it. I personally would use your current high quality guitars and a good teacher. I think you'll find you'll go farther with those two things then fretlight. Music is a very personal thing, and I think that the interaction of listening and working with others will make you a better musician and rocker faster then working solely from a computer program. Sorry if this isn't what you're looking for.