I got a cheap skil 3 blade set for like 20 bucks has like a think 60t and two 24t blades, my main blade is I think its a 60 tooth, might even be a 80 tooth, the more teeth the less they bite into the wood gving you cleaner cut, though trying to use a 60 or 80 tooth blade on something thicker like a 2x4 or plywood, you do ahve to cut really slow or risk burning the wood or bogging the motor down.
Using a less count tooth can be made to cut smooth just have to feed it slow let the teeth chip away, but its best to get a higher count blade like a60 or 80 tooth, you will tell the difference, I have tried the tape method and still didn't help.