How do you focus the energy and buildup

So when the aneros / or aless is building… its almost as if like an electrical current in your body is building up (is the way i would describe it). I find that this sometimes can get very harsh and powerful and sometimes it is more of a gental energy. I would describe the Super O as when the energy keeps flicking super fast thru the body and prostate area and then all of a sudden it just stops and you get the calm seas super O where it feels like you are floating thru space.
The question is what do you focus the energy on when it builds, do you try and keep it calm and slow, or do you enjoy when you clench (or kegal) and the energy builds and builds. I have had mixed results with both methods. But i much prefer the calm energy that slowly builds. I find the harsh energy can sometimes make your entire body start to twitch all over.
Do other people have this same build up of energy style (fwiw i rarely use the aneros anymore as I can do it all Aless… especailly with thc it just sets it off instantly) But just seeing which method people use to reach their super O..
I find the best sessions are when i try and almost stop the energy (which is impossible on thc) and try and stop the body from performing keegals and it eventually gets too much and I have to give into it.