ETX-120 VS Promolife O3elite decision.... help?

Hey all, I'm currently on the fence trying to decide on a EXT-120 or one of the o3elite units at Promolife. The promolife units are nice in that they have a real lifetime W on the WHOLE MACHINE rather than just the "tube" (!). I honestly after all this time know if the ceramic they use in the cells is actually a good thing or just a cost saver, also the price is QUITE good... (WHY?). The EXT seems solid and reliable, glass glass dual dielectric... bit pricier and only a lifetime w on the glass, which seriously rubs me the wrong way.I was going to buy the plasmafire but heard so much crap about the good "Dr" that I decided to just not go there... at all. He needs to check eemself it would seem, lost me as a customer on that alone, don't care if his machines walk on water either. Well, any feedback greatly appreciated... THANKS!