I believe the Anchorage Armada have the best home ice advantage, and to be honest its only fair. As reported by @Wearingabear, the Armada traveled 91,366 miles this season. The Armada are so far away from every other team, that every road trip feels like they are gone for double the time. However, that works for their home ice advantage as well, as many teams are not use to traveling the far for a road game, making it extremely difficult for them to play after that long trip, giving the advantage to the Armada.