I've cut most everything form red oak 1 1/2 thick to 1/8 baltic birch ply. Absoulty love the Flying Dutchman blades. Discovered them about 15 years ago if memory serves me, I've settled on the polar ones, I use the 2/0, 5, and 9's they're all I've needed for the past several years.
Heck, I've even cut thru 1/8 metel with them !
Chris