I've had good luck with StoneTec stuff. You might have good luck contacting a granite fabricator - they can't afford to use lousy stuff. I mail-oredered mine from the TYW store on www.johnbridge.com. Normally, you don't need much. The really good stuff is quite expensive, but not bad if you can find it in say pint bottles. The good stuff can cost in the order of $150/gallon, but that is WAY more than a person would need for a home - that would last probably 200-years! The stuff generally goes a long ways.