I have the MT50 Extreme. No real complaints here. I use them for stand hunting only, Too hot to hike in. The parka is a little bulky for bow hunting, but it works. I turn the collar under and try to stap it down with harness and bino strap. The pants fit like a champ! Nice waist band. I did rip them fairly easy clinbing a fence. I don't know if the Arctic would ripped under same circumstance or not.
I don't know anything about the Artic brand.