I've used several kinds. Leslies is one of the easier to find it seems, but most of them look exactly alike. I've found it for $1.99/50lb at Meijer (regional chain), and no more than $10/50lb at other places. Leslies is $9/50lb. I've always had the lighter color, but recently, some members have posted pics of a much darker (and better looking IMO) PFS that they found. PFS is PFS though, when you get down to the chemical aspects of it.