I have heard some negative comments about their products but I have been using them on my ss for about 6 months and have no compliants.
You will have to play with them to get the best results, I have found that to be normal with all wash products.
The reason I changed from Blendco on the SS side was because of the cost of the Blendco products, and I can get the same results with a lot less money.
I have no compliants on the Blendco products it is just that my auto. provide more income than the SS do, and the price of the Blendco seem to continue to go up.