i was going to go blue i have the 250X miller mig and wanted to stay all miller. but was talk in to the 275 precision tig lincoln with the avdvance controll panel with back ground and pluse and post flow i am very happy with my lincoln and look it miller but there machine to be over rated on out put ? i weld aluminum heads with mine and steel to.I just welded a head to day chevy bow tie and with the square wave and being to move the wave for better cleaning helps the back ground and the pulsing helps to.I had a old round wave miller that was ok. but i think the lincoln may still be better. hard to say no one would let me weld with any one of the machines so i paid out $2700+ with out runing a bead. the old counter man at my welding store told me to buy the lincoln .and i did get a great deal so that is the way i went but this is like ford or chevy. but i love my 250x milller mig and am very happy with both welders just wish they were the same color