I have the 535Q Dunlop at the time... I hear so much about the Morley's optical activation and tone. To Vox's "originator" of wah stories. All the way to the Weeping Demon being a mean son of a b!tch. So with all that said, keeping tone while sustaining the full sound of the wah.... what would Petrucci do (W.W.P.D.?) Maybe I should just be satisfied and keep the Q? I just feel I haven't heard it all yet.
go to your local music store and check them all out.... im not going to lie the steve vai bad horise is awesome... check them out before you decide
try out a teese or a fulltone, theyre imo the best wahs out there. they are hard to find though.
imo the one you have is better than the others youve mentioned.