Some or most of the replacement products are thicker, Pinnicle, and Hock blades are the thickest. The Veritas blades are a little closer to the stock blades but some thicker. I'd recommend that if you go with any of the after market blades that you buy the matching chip breaker with it. Having been down this alley before you will save yourself some time and headaches. What does having a thicker blade mean for your plane?, you will have to open the mouth some to get clearance for the blade. On the plus side you will experience less chatter from the plane and more mass with the thicker blade, and lastly you will probably know that the plane if cared for will last several generations past all of us. Now with all that said, you could continue to use the blade you have as long as its cutting well and you're happy with the results