Interesting... these threads have come up before and the machine that's posted is always some $300 machine (can't remember what it was though). How do the discs come out? Can you see the swirl/patterns under normal light?I love my JFJ Easy Pro.
http://www.amazon.com/JFJ-Easy-Universal-Repair-Machine/dp/B000RBE4B8
The only thing I haven't been able to fix using the minimum recommended settings is laser burn from a 360.