I have had the PowerPlasma 60 for a year or so, and am pretty happy with it. I went with the 60 instead of the 80 because for some reason I thought the 80 was a three phase unit. I do not have three phase power in my garage so I went with the 60. I have a friend who was looking at buying a Plasma so I loaned him mine. Now I have an opporunity to sell it to him and am considering doing so. I am running a 50 amp breaker, on my power. Looking for any thoughts on the upgrade, anyone using an 80 currently?