I dunno.... I never heard of such a thing. I have used some of the coated blades before, and they seamed to work quite well.
The Forrest blades though...., they just freaking cut and stay sharp forever. Even though they don't have as many teeth, they leave a better cut. Their customer service is quite helpful too. You might just want to give them a call and find out what they recommend. Their sharpening service is top notch too.
A thin kerf helps for harder wood, but if you have the HP, I'd stick with 1/8" as they do not vibrate and tend to leave a smoother cut.
