I'm looking to buy a dado for my ts3650 (love it) I've narrowed it down to the freud sd208 or the dewalt dw7670. Both are around $100 and thats all that i'm willing to spend. I would like some good feedback on how well they perform and how many sharpenings you get out of each. I heard the freud has much more carbide than the dewalt, but the dewalt pruduces a cleaner cut. I'm a novice cabinet builder, so I would like to be able to get at least a couple years out of which ever blade I choose.