I'll mention one other thing before the brand war really kicks off. I use a Synchrowave at work, and a Dynasty 200 at home. I've also used a couple different Lincoln Tig machines. Miller and Lincoln are pretty much the gold standard, but TIG welding is way way way way more dependent on the welder's skill then any other kind of welding. A top of the line machine will help, but you'll get better results with a middle of the road machine and 500 hours practice for the same cash as a top of the line rig. Make sure whatever machine you buy you leave room in your budget for a fair amount of practice before you hit your big project. Also check Craigslist and pawnshops for used machines. A good welder will last a long time, so often used ones are a good deal.