I loved the magnatraction on my Skatebanana. I'm in se WI and my local hill gets tons of heavy traffic and very hard packed conditions at times. That board was great to me.
I went with a Arbor Westmark with Griptech, I love the overall feeling of this board. I do everything with it though, groomers, jumps and park. This year isn't as icy so it's not quite a fair comparison IMO up to this point because the riding conditions aren't as bad as last year. None-the-less still loving the Westmark.