i'm with Fluff here, having tried the deamon tweeks leading edge stuff which lifted and went crap i've only used stuff from Justridingalong.com
it's lasted really well, not come unstuck or lost colour. i've just put 125cm worth on my girlfriends and my bikes. Will pay the extra to get the good stuff for me, tried those "frame protector packs" too more rubbery that the copter tape but lifted over time and it had this odd ribbed effect on it rather than the smooth tape.
you can get cheaper stuff but i never find it as good.