I agree with you JP. You cant really say "Is islamey more difficult than any of the TE's?" you would really have to ask "Is islamey more difficult than ALL of the TE's?" Just like any other set of etudes, they all have different focuses. And after looking through all of the TE's and performing a few, I would rather learn Islamey. I'm not saying that Islamey isn't hard, it definately has contributed to my tendonitis.... I would say that islamey is damn hard and the transcendental etudes are damn hard.
cheers!
Rick