I don't have any direct experience with them, but, if it helps, I have watched more than a few welding videos on YouTube over the years and a number of them have spoken very highly of at least one model from that company, especially considering their low price point. Both "Mr. Tig" from weld.com and Jody from "weldingtipsandtricks,"- both whom I've come to respect on there- have spoken highly (again) of at least one model from the brand. I also remember also seeing a positive Everlast review from ChuckE2009, who has a dedicated welding channel there, but I'm a little less familiar with his abilities/background.
Of course the company could be throwing these guys free machines or otherwise be paying them and others to say nice things about them, so take it with a grain of salt, perhaps.
In a recent thread on garagejournal here, a number of members spoke very highly of the Ahp Alpha Tig machine. I don't know anything about it, but it may be worth looking into as well, as it does seem to be available on Amazon