the miller matic runs off 110. I have a 180 that runs off 230. if ide waited two months to buy it, ide gone with the miller matic. I was already wired for 230, the previous owner of my house was a welder too, so, no sweat there, but would still be nice to go to freinds house and weld there for them.
the difference between the 110 verion and the 230 verion(that I can tell) is the 110v welds 1/4", whereas the 230v version, (which I have)welds 5/16. no big deal when welding thin wall tubing on motorcycles, but good to have if you have a neighboe with a tractor that needs repair every once in a while.