I use Chemica easyprint and easyprint sir (sublistop). Works great with latex.
"Easyprint 1702 is a printable flex white matte PVC media for use on eco- and true-solvent printers for heat transfer applications. Hewlett Packard and Chemica have developed a partnership to test the textile application purpose; Easyprint has been approved for Latex inks printing. Suitable for cotton, polyester, acrylic, and similar fibers."
for the Rtape problem, sometimes when I have too much pressure in cutter, peeling is impossible..
Riku