i have a 75A MMA wolfwelder that was about £90 new and it has lasted me fine so far 2 years of occasional use on 2mm mild steel tube. thinking of getting this inverter welder from them, for higher amp MMA welding and some dc TIG. wondering if anyone could give me any advice on this specific product. ive read some stuff on here about wolfweld migs that are always live and sound like a liability, wondering if there are likely to be any similar mishaps with this. i have only used a TIG at college with the full ac/dc set up, how would this kind of TIG compare?