Thanks for that link Jim. Another question comes to mind. Even when the size number is the same, no matter the brand, how do the blades themselves differ? As somebody above stated, the brands are different in pattern, angle, kerf etc. I suppose it's still just a crap shoot until I get enough experience to see the difference. I'm going to cut up some wood and paste the practice patterns on it and start cutting. I'll make notes of what works and what doesn't or whatever. Thanks to all.
Ray