Jones Mountain Twin would be a good one to look at. Arbor's full rocker boards hold great on east coat hardpack too if you were open to a full rocker board. You could look at the Coda or Element. Griptech works just as well as magnetraction I have found. You can also look at Smokin', they are similar profiles to Lib and have magnetraction as well. I have ridden a couple of their flat camber boards but have heard great things about the KT22.