I have a millermatic 210 in mint condition, but i was thinking about selling it for a new 211. I noticed that they both have the same weld capacity. Would this be a good trade up? The 211 is real small and can operate on 110v which is nice although i usually use my maxstar 150sth if i want to be mobile (for tig of course). Is duty cycle the same on both units? how is the arc on the 211 compared to the 210?