I was just loaned one of paul b's tasers from a local reefer, it works pretty good. Some of my aiptasia were a little resistent and needed to be zapped several times. It can be hard to get at all the aiptasia, i have a breakout in my tank with several hundred of these dang things and it could take me a year to zap them all...some are a little too hard to reach/corals are in the way so i think it in combo with a filefish/nudi/pepp/cbb whichever you chose would really make a diff, Ill probably go with the filefish as ive seen one in an lfs just erradicate their aiptasia.
Paul makes a very nice product though, and its kinda fun to see them boiling. sounds evil now that i write that out.