Question: what is the best 12 miter saw blade?
Answer: Freud 12-Inch Diablo Ultra Fine Circular Saw Blade (Model No D12100X)
DEWALT – 12 in. ... 
Concord Blades 12-Inch 120 Teeth TCT General Purpose Saw Blade (Model No WCB1200T120HP)
Freud 12″ Ultimate Cut-Off Blade (LU85R012)
Freud Diablo 10-Inch 50-Tooth ATB Combination Saw Blade (Model No D1050X)