
Posting this question in the 'tools' forum hadn't even crossed my mind. Thanks!!
The way I see it, you have 3 choices.
1.Spend a lot of money on a good Lincoln/Miller MIG unit (probably in the $400 range)
You'll have a good welder that'll last a lifetime if you can stomach the initial investment. They're pretty versatile too.
2. Buy a cheap POS HF or Campbell Hausfield MIG welder. You can get one new for < $150 or find a used one for under $100. It'll probably work OK for small jobs, but if you use it a lot you will eventually end up frustrated with it and end up back at #1.
3. Buy a used Lincoln "Tombstone" 225 stick welder. You can weld just about anything with this. Build your own skyscraper if you want. The downside is that stick has a slightly longer learning curve. I went this route and haven't had much time to practice, but it only cost me $60 and if I ever tire of it and decide to move to a MIG, I can get my money back in a heartbeat.

Personally I don't have a clue where you can buy a *good* mig welder in the $400 range. That kind of money will get you one of the better cheap welders. Don't get me wrong, there is a place for cheapies, but not if you intend to do any real welding. Most good entry level mig welders start at around $900. I would suggest that if you are going to continue to learn and weld. Try to determine what types of welding you will most likely be doing. Then buy the best welder you can afford that will weld the types of projects you intent to do/make.
...don't know if they still have them ...that if I did not buy what I had I would have been interested in. They were complete with cart, auto helmet and some other stuff as well... may be worth a look.The 180 amp class MIG was made with crowd in mind, they had garage forum guys picture on the wall as a poster children when they invent it. Best buy in this these days is Hobart 187 for steel although there are a couple other cases where the price has dropped some to make them worth a look,,, but,,, none work better, some others have more features but its pretty moot.
get the miller matic 180 then you can get the inexpesive spool gun and weld aluminum
This is the best bang for your buck comes with the spool gun weld anything right out of the box. I wish I had the spool gun for mine.
http://www.northerntool.com/shop/tools/product_200392663_200392663
