We love Forever Flex heat transfer paper. The Metallic colors, especially, show beautifully on fabrics.
Every once in a while, we've gotten a batch where the A paper (the colored paper) stuck to the B paper, and there was no way to use those sheets. Perhaps those batches sat too long in a warehouse or something?
The last order that was sent to us was missing the B paper altogether, and when we contacted All American Print Supply to ask for the B paper, they had to contact the manufacturer to verify that it was indeed a two step process. Eventually they did, and the B paper was sent, but we had to wait weeks.