HF MIG-100. Made a great anchor.
Lincoln Weld-Pac 100. Great starter. Did well on flux or gas, but if it's not a smoking deal, pass as a first.
Miller 175. My current basement rig. Love it to death.
Esab Migmaster 250. Not worth it. Customer support sucks.
Lincoln Powermig 350mp. Has it's good points, but not enough of them. Can do TIG, haven't tried it.
Miller 210. Great unit.
Miller 350Mp. Demands respect! Great welder. Worth every penny.
Millermatic 140 with Auto-set. That's a great little starter unit. Auto-set is suprisingly useful!
Linc Square Wave TIG 175. Nice for the hobbyist.
Miller Syncrowave 350 Water Cooled. Nice. Real nice. Makes me want to play with a Dynasty, though. Anybody got one I can fiddle with?
All that said, here's my opinion. If you can swing it. go for the Millermatic 180 with Auto-set. If you're serious about it, this is a welder that will grow with you, and suprise you with it's capability and ease of use. The Hobie uses the same torch, but the M25 torch parts are available everywhere. I'm sure the Hobie's a fine welder, I've just never used one. Also, while you're at it, spend a couple c-notes on a good helmet.