I was looking at your same situation and my choices came down to your list as well. A friend at Airgas told me to look at the Thermal Arc 211i
i did and after 3 months of adding that model to the search mix..that is what I came home with. I have used the Thermal Arc for 2 years without issue. Love the ability to run 110v or 220v and I mig and stick,,, kool to be able to tig by ordering the torch.
Looks like a very nice welder, I wish the specs were presented in a more similar manner to the other welders named. All the website's literature and manual links are broken, which isn't a great sign.
For better or for worse, I'm an internet shopper. I like to buy local whenever possible, but the shopping is usually done before I leave the house - I just feel the majority of the sales folks out there are mostly out for themselves, so I rely on product information and forums like this one to determine what's right. And, since my one horse town has next to nothing to offer other than groceries, nuts and bolts, most everything I need in tools and parts are bought elsewhere. Further on that line, since the parts are hard to find in the nearby "metropolis", or they are charging the tourist prices (I live in a tourist area), I'm just buying online more and more.
So I've looked up some info on Thermal Arc and they seem a nice welder, but the symptom of the broken web links lead to other findings: Service issues, eventually resolved
Thermal Arc 211i problems and finding out that Thermal Arc is now Tweco, so apparently the mismanaged company was sold, but who knows if it's now better or now suffering from growing pains....
As the guy in the weldingweb story said, 50% of the cost of purchase is the product, the other 50% service. I hadn't really thought of this part of it till you brought up Thermal Arc, but I live in the sticks and have to drive 45 minutes in any direction to hit a welding supply store, so I definitely want to make sure I have a quality product! And local dealers that will service it or support service. If you read Miller's service record it's the best in the biz from what I'm hearing.
I haven't visited any local welding supply shops yet. Might do me a bit of browsing on welding web to learn more, I know there is an Airgas shop but they have a reputation for being shall we say, uncaring for the hobby welder. Not that it's really that important, after all I just need some gas not a pat on the back.... I'm guessing it's going to be the only place around to get shielding gas.
Thanks for the offer of info, I'm certainly not saying that it's not a good product, because I doubt that another company would have carried it forward if it wasn't, but the potential service issues for me and my location seems riskier. I'm looking more and more at Miller now. I haven't ever bought an expensive tool like this before and a little extra expense for a guarantee of good service and company longevity (available parts for all time) are seeming worth it.