4frnts are more solidly built, thicker stronger bases, ptex sidewalls etc... armadas have a sexier flex, but SUPER THIN BASES! You will core shot them if you hit a rock. I rode ARV 185s all winter and got MSP 187s two weeks ago and have taken some big hits on both skis, personally i like MSPs more for a durable big mountain ski that can also be taken in the park, where as I'd buy armadas if i was mostly skiing park.
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