Re: Thinking about buying a mig-welder...
I concur and forgot to mention gas shielding. Flux core welding is ugly and takes more work to make a good looking weld. It's okay if you're mending fence posts or don't care how the welds look. Go with a machine that will use shielding gas by all means.
Lease your tank from a local welding supply store. It's cheaper than buying one and refills are less expensive with a lease.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"