I don't know what the situation is in the us, but in the uk used hd500 prices (often over £300) are not much less than new (£400) . Since at least one major gear shop gives a free 4 year warranty i would buy new. Too many hd500s need repairing at some time - usb is a particular problem, also switches, the extra money for 4 years peace of mind is well worth it. Shame line 6 don't build like boss.