I'm pretty happy with the transparencies tbh. Although on mine, there seems to be two sides, one that gives a fuzzy dirty effect with a lot of stray toner around the actual print (looks like static), and the other side that gives perfectly crisp prints. Unfortunately I can't really tell the sides apart.
Apart from that small speck of dust that prevented the transfer at the top left of the logo, the sheet came out perfectly clean, the totality of the toner was transferred to the dial. For PCB transfers where you could probably keep the sheet intact (I had to cut mine to fit between the applied indices), that would also mean the sheet would be almost indefinitely reusable.