For thicker wood you need less teeth per inch on the blade so it has a chance to clear away the sawdust...for 2x.. I use a Royobe(sp) pin end blade from HD....cuts great at full speed..(no variable speed on my saw)..
(you can tap the pins out to put the blades in your Dewalt)...they don't make tight turns like the small blades do though. Just my two cents.