Hero's use of spirit siphon

How well do heroes use spirit siphon? I'v decided to use a support/heal rit hero in my para's hero setup (similar to racway but with the rit instead of the orders derv), and I can't decide whether or not to use SoS + spirit siphon for e-management or OoS. I'm trying to make my decision based solely on e-management, regardless of the offensive potential of SoS or the defensive potential of extra bodies (which isn't much since im not using any spawning power. So my question is, in terms of energy management, which option would heroes use better? OoS or Spirit Siphon with the 4 spirits (Recuperation is also in the build, regardless of which elite is chosen). Well enough to never run out of energy. They seem to know how much energy each spirit has and will never use Sihpon if the know it would result in energy loss. This also means they will use it as long as energy gain makes up for SS' energy cost e.g. if it grants 0 net energy gain. That downside doesn't matter though because on practice they never run out of energy with it no matter how energy intensive the bar is.

Well enough to never run out of energy. They seem to know how much energy each spirit has and will never use Sihpon if the know it would result in energy loss. Your heroes have abilities mine seem to lack.
Can we make a trade?

Your heroes have abilities mine seem to lack.
Can we make a trade? No thanks. :P You probably equipped them wrong or didn't see it right. I don't know. Maybe glitch?

No thanks. :P You probably equipped them wrong or didn't see it right. I don't know. Maybe glitch? My Heroes seem to use it well enough in the middle of battle, but will SPAM it once there are no enemies nearby (and as long as a spirit is in range). It's really quite irritating, especially since the sound is very distinguishable.