In the last few years Everlast has really made strides to cover up, but more importantly rectify the early problems they had with their machines. I'd stay away from the combo tig/plasma cutter machines, but the dedicated AC/DC Tig welders aren't bad.
I personally chose to purchase an HTP, it's not a Chinese machine, it's an Italian built machine. USAweld is the sole American Importer, and distributor for them. I know several high end welders that have used them and said they're as good as any of the other brands they've used. But, they're still $2500-9k. I do own a Chinese Plasma cutter that operates flawlessly inside it's limits, and it will max out a 1.5" severe cut. So knowing what you're getting and using it within it's limits are the most important thing.