whats a good miller TIG welder?

i wanna learn how to TIG weld. i have a millermatic 210, and a miller spectrum 375, and so far, i love miller, so i would like to get a miller tig. i was lookin on ebay and they range from like $900 to like $3000. i want to get something im not gonna have to upgrade down the road. waht would you guys recomend?

I'd go with a Syncrowave 250 or 350, its the same basic unit but the 350 is a little bigger. Either one is an awesome unit.

Keep in mind too, that in most cases, the bigger the TIG is, the farther you can turn it up AND down. For example, the 350 will weld slightly thinner sheetmetal and thicker than the 250.

you need to decide what all you will be welding before you decide on a unit.

I have the Synchrowave 250DX and a Tigmate, both are great, the Tigmate however welds no thicker than 1/4" and is much better on thinner stuff, whereas the Synchrowave will burn thru 1/2 plate if you want.

I also have a Cybertig II and it will burn thru even thicker plate, and its 20 times more adjustable.