Your most successful technique?

Well I'm not going to lecture you, because I'm still not where I want to be with my own sessions, and my technique is still a work in progress, but you did ask...

Flat on my back. Legs down flat (Aneros tail removed). Arms by my side. Dark room. In bed. Eyes closed. Motionless.
My mind returns to a place that it's learned how to get to. Relaxed, quiet, and looking inwards. I appreciate the new pressure of the freshly inserted aneros, and think about how nice it feels. I don't operate with big contractions, I just apply minuscule amounts of tension and see if it starts to go in some direction. Usually it's a slight push out, not anally, but like if I was trying to breath in through my navel and exhale that air down the front of my abdomen, and out my penis. There's a muscle (or set of muscles) that does that, and I'm not sure exactly what it is. Toying with that subtle tension gives me some nice feedback, the aneros pressing and ever-so-slightly rubbing the front wall, and if it works out, I can get a really pleasurable sensation that feels like some thick fluid gently gurgling through tubes in my lower abdomen. (a recent development, that I'm trying to re-experience)
I play around like this until the aneros wants to twitch and throb on its own, and then I do my best to leave it alone, while staying present with the pleasure... watching it and embracing it. I found there's a type of twitch/throb that coincides with pleasure and another type that does not. If I try to focus on the twitch itself, and try to "will" it, it produces twitches without pleasure. But if I focus on the pleasure sensation that the twitch produces, the twitches become less frequent, but come with pleasure, and feel that bit more involuntary. Filtering out the fake twitches, in favour of the pleasure twitches seems to be the road forward, as far as session momentum goes. And I do this by staying with the pleasure sensations, and ignoring the movement itself. Only physically engaging to force myself to release tension. And the reward for releasing this tension, is more of the good twitches. Just as long as I can maintain the mood. A sensation of tenderness develops in my prostate, and the small twitches and throbs feel across between kneading dough and rubbing a bruise, only the feedback isn't pain, it's comfort and pleasure.
Both the pleasure and throb intensity varies over the course of the session, and each level blends smoothly into the last. It's more of an ongoing deep orgasm, not high intensity with well defined peaks, but a gently rising and falling wave of pleasure that radiates out from my core. The depth itself is very satisfying.
My unachieved desire is to have this deep pleasure spike and overwhelm me, which it threatens to do, but honestly I'm afraid of it happening. My best success in pursuit of this is focusing on being helpless to it, and making a deal with myself that surrender will be rewarded with pleasure.