[EdCaffreyMS]

If your happy with the belts from the source you mentioned (I tried their belts) you'd be giddy about the belts you'd get from Tru-Grit or Pop's.
When I ordered from Barbkat, I got a full selection so that I would be comparing apples to apples, that was the last time I ordered from them. The belts were not near the quality that I was used to. As with other "bargin" belts, it took 3-4 of them to do the job that one Norton/Klingspoor/3M belt would do. In this case your work will reflect the quality of materials you put into it. With the top quality belts your grinds will be smoother, more even, and just overall nicer, while using fewer belts to accomplish your task.