Flem,
It's actually a Grizzly branded blade. 1/2 the cost of the TW. I can tell not as much time went into the Grizzly blade and it just looks rougher, but for the price and the results I don't really care.
I can say the TW is scary sharp. Much sharper than the Grizzly. I cut myself a couple times handling it. I'm not sure what the deal is with this TW blade. It aggressively grabs the wood and starts pulling it at a sharp angle. I had trouble cutting in a straight line without the fence. It was cutting at such an angle that I'm pretty sure my fence wouldn't adjust that far. Even if it could, I have no interest in cutting at a 20-30 degree angle to my table. That's just ridiculous to me.