I have been using the WWII and am considering purchasing a blade more suited for cutting Baltic Birch Plywood. I have been doing fine with the WWII but think I can gain a smoother edge with more teeth. The WWI has 60 and the Duraline Hi A/T has 80. They state that the D A/T is good for melamine as well but I would mainly be cutting plywood and boards. Any one that has tried both? I would appreciate not getting into a brand debate. I have had good luck with Forrest and want to buy Forrest. Just want to invest with greatest benefit.