only the LATEST generation Koralia Evolution powerheads can be used on a generic or reef computer timer. AC motors in power heads can spin backwards on occasion so the Koralia units have a built in bumper that prevents reverse operation. ( i dont know about the SEIO or other not so popular PH)
both tunze and hydor also have "controllable" powerheads that are DC instead of AC and require an expensive propietary controller to use. I have yet to see an scientific data supporting the true benefit of "random" flow. IMO - I think what you really need is just lots of flow to keep food and microscopic goodies afloat in water column constantly for corals to grab with their polyps. Good flow also keeps your tank clean cause it will force stuff into your overflow box to be cleaned by all the goodies in your sump (skimmer, filtersock, chaeto, etc)
Vortechs nice because of their wide flow pattern - the blade/cage design is what helps them do what they do. The controller is a nice touch and the price point is inline with equivalent controllabe units from TUNZE and HYDOR.