Ordered 6 transparency substrates for making digi negs on, 3x 8.5x11 inches (300 sheets) and 3 x13x19 inches (150 sheets).
I find the large variety of products on the market a bit overwhelming. I went with the cheapest types that gave me nice platinum prints. Saving money and doing good quality printing.
With the recent chemical, printer ink, paper and now transparency buys. I am ready to do some serious retirement printing!