I'm considering buying either a Thermal Arc Fabricator 250 w/tewco spool gun or an ESAB 250 compact w/esab spool gun.Their output is rated the same. I would like opinions/advice as to which is better, including the spool guns, which I will use on aluminum (spray transfer). The TA has a built in features like spot-stich, burnback, etc. ESAB does not.