Separate names with a comma.
According to the Church of the Subgenius:
Too much is always better than not enough
I got my "like new" Hobart 140 off eBay for $235 with bottle, gauges, and accessories. It was sold as: local pickup only, so I was the only bidder.
Hobart 210 MVP (on sale) will come in at your price point. It is 120 or 220 and has the capability to add a spool gun ($250) for welding aluminum.