i not sure whether the constant reliance on my wife manual prostate massage has conditioned my prostate to be more aware of her finger instead of my helix. My last 2 helix session were pretty much.. boring. no super-o like what i used to have. A few mini-o and i am done.
My revisit to peridise is another different story. While peridise started less interesting in the beginning, i could have a few superO from it in a single session. Not really sure why.. suspect additional anal pleasure from the peridise helped to bring me to the super O.