Yeah brian there basically hit it right on. I have used a Lincoln AC stick welder but a bit bigger than what he mention I THINK, I can't remember because it was last where when I used it and I only used it a couple times but yes it will weld up pretty damn nice and strong as hell too. They say TIG welders are better than mig because TIG is hotter and it takes longer for the weld to cool and they say that since it takes longer then of course weld is stronger than a MIG welder where the weld isnt' as hot and cools faster so TIG welding takes longer to cool. I don't remember exactly how to explain it but you get the point I am trying to get across I am sure. Don't go cheap on a welder though, that's all I have to say. Now if your looking to weld some aluminum from time to time and you go with a MIG welder then prepare to spend an extra 600 bucks or more on top of the welder. If you wan't to weld aluminum you will need a control box and a spool gun. You can sometimes get by with just using a spool gun on a Lincoln welder but on the Miller you NEED to have that control box or else you will not get a good weld at all. Also you need the wire for aluminum.... I guess that's all there really is too it. Pretty damn simple if you ask me. I still have tons to learn too. A lot of people that I know that have been welding for years tell me that they still learn something new everytime they weld or almost everytime so don't expect to learn how to weld real good right away and know everything either because I have only been welding for a little over two years or so and still just don't know too much. I wan't to take some classes on TIG, Stick and oxy welding to learn I guess you would call it theory I don't know but like not how to get good at welding with them but to learn to use them properly and what to do in certain situations with each welder.
Alright well I have wrote enough so I'll let you guy's put your imput on this...