My one and only use was Brodak Black...made me throw all three other color rolls away......IMO twas junk and ruined my wing....grrr
The problem: stuck down perimeter....went to shrink...pulled loose at perimeter...the more I fused the more it released....leaving the black glue pigment on the balsa and clear plastic not stuck to anything....a bad mess on a perfectly good built Big Otto... very perplexed....love a lot of Brodak but the film is junk IMO
BTW I have had pretty good luck with the Hobby King stuff