There is nothing wrong with a multiprocess CC/CV unit like the Miller XMT 304. If you plan to expand your reach, they're a great option. Scratch start DC TIG though. As far as the MIG operations go with that type of unit, you might be better served purchasing a stand alone MIG instead as most MIG add-ons for the multiprocess machines are geared for the professional with features you may not want or need and at a higher purchase price.
The reason I mentioned the Syncrowave is that it often comes up on the used market. Since it is a transformer based welder there is far less to go wrong with them. With a bit of looking or biding your time you should be able to pick up a 250 model, possibly with the welding leads and water cooler for less than you would pay for a new Precision TIG. Unless you are after the shiny paint job and new factory tags, I'd be nosing around the used transformer based TIG market to see what the pricing and availability would be.
Very happy with my Precision TIG 275, but purchased it used at a good price from an individual that took great care of it...and it came with the optional pulser panel and water cooler. Haven't burnt a rod with it since my Miller DialArc 250 is such a great stick machine.
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