Disc-go-devil. Great Little machine. I've done around 8,000 discs in it in the past 4-5 years. I've been able to do Game Cube, CD, DVD, and bluray, even HD. It use a Consumable pak. Which is basically a silicon liquid. Depending on the gouge depth, its been able to get rid of them. They use to be a few thousand when I bought it, but there just over 1000 now.
Check it out. The site If i remember is discgotech.com or .ca
Make sure you purchase it from the US distrubuter. Its manufatured in canada, but still cheaper to buy in the USA and Ship back to Canada. It messes with my mind.