Penrose's argument sounds a bit like: "We know we will never be able to exceed the speed of light, so we should stop trying to build spaceships."

I also loved my N-charge I which bit the dust recently and picked up the N-charge II. The size changes really don't make a lot of sense from a usability standpoint. Not only that but I have gone through two of the N-charge II's already. They are no where near as robust as the previous version.