The saw blade needs of a hobbyist are typically very different than the needs of a professional, because our cutting habits and objectives are often very different, so a blade that serves well in a commercial shop, might not be a great choice for an average weekend warrior, and vice versa.
Hobbyists tend to make one cut, or a few cuts at a time, which gives the blade a chance to cool down between cutting sessions…they also tend to use smaller saws, and thinner kerf blades. Professionals, especially in a high volume commercial shop, tend the run the saws nearly continuously, where edge life and heat dissipation are more important than initial cut quality….downtime to clean and sharpen blades is far more critical to them than to a hobbyist. Commercial shops are often willing to sacrifice that nth degree of cut quality in favor of “good” performance for extended periods….plate thickness, carbide thickness, heat dissipation, and durable grinds are typically more critical to them. Blades from Forrest, Ridge Carbide, Infinity, Freud Premier, Tenryu Gold Medal, CMT Industrial, etc, typically use steeper top bevel grinds to reduce tearout and also tend to use very tight side clearances that polish the edge of a cut…those features tend to abrade more rapidly in a commercial setting, and also tend to cause more heat build up, gumming, and wear when run for long periods…neither of which are especially helpful in commercial applications. They’re awesome for low volume applications like a home shop, and tend to do very well in magazine tests, where high volume cutting is rare. A hobbyist like me can easily get a year or two between sharpenings on one of these blades, but wouldn’t hold up as well for continuous cutting.
I’m familiar with Leitz, and have used several of their blades….they’re very good….same with Amana Tool and Everlast, which are also more common in pro shops. Leuco I’m not familiar with….they look to be well made. I guess you really have to ask yourself what you’re looking to gain.
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