Do you have any welding experience?
I'm guessing not based on your post, and if that is the case, I whole-heartedly agree with Razor. Go with a nice MIG. My dad just picked up brand new Millermatic 211 for around $1400 after getting gas and wire. Works with both 220V and 110V with just a quick change of a plug and it lays down a really nice bead. Duty cycle is a bit low, but I'm guessing for stuff your doing, it'll be more then enough for anything you'll ever need.