Hi Flecc , I hear what you are saying about rival battery chemistry systems . It reminds me of the time when we had two rival systems for video recorders , Betamax and VHS . In the end a clear winner emerges . Same with 8 track tape players and reel-to-reel . In the end , a clear leader emerges , and this can be for all sorts of reasons . We do not necessarily get the best , we get what is most profitable for the manufacturers . The battery of tomorrow may be none of the above , but some thing we have yet to hear of . Or a capacitor . When people buy a car , the majority are buying a way to travel . And most have no option but to buy whatever does the job at the lowest costs . Bikes are different because many are bought as toys , which is a different ball game .