With my experience, a thinner Bi-Metal blade will give about the same life, perhaps slightly shorter than the Carbide tipped. The difference is the Bi-Metal will be blunt, whereas the Carbide will fatigue crack on my smaller saw. My Tri-Masters took a while to fail, after quite a bit of re-sawing, but they will still be perfectly sharp when fatigue cracks start showing up. It gets expensive. Bi-metal = $40, Tri-Master = $180.