[Jim2]

I've got two Dynastys and avoid them when doing aluminum. One is about 4 yrs old and the other 8yrs old.

I run a Aerowave on aluminum but I had excellent results with a couple Syncrowaves 250/351 I used to own. I'm not saying the Dynastys don't work, I just find they are fussy with fit-up gaps and I can't flow out an aluminum bead the way I sometimes want. Also difficult to get clean welds on cast aluminum. My Dynastys have a really focalized heat regardless of balance and frequency settings, but lots of shops seem to rely solely on a Dynasty which leads me to believe the newers ones must work a little better than the older ones I have.

Should I be trying a new one? I've been thinking about this.

MT930, Syncrowave if you have to meet a budget, Dynasty if portability is required.

TIG - Most guys I meet prefer Miller.

The inverters seem to work really good for DC tig, great arc stability on light materials and thin stainless. Good modulation down low, and paulse features work well. Certainly no complaints.