I have both cubes (Red C4Y, thanks Justin, and a B and a W Edison), and I have to say that they have their own pros and cons, it depends what type of a cuber you are and how loose or how tight you like your cubes to be.
For OH, I would def. recommend the C4Y cube since the edge caps definitely give a better sense of control and balance while turning, however it WILL pop during an average of 5, so be prepared to use your strong fingers (LOL) to fix your cube quickly and continue.
For 2H (normal speedsolve), Edison wins hands down. It cuts corners better (about 10 degrees better), it's a little noisier but that's okay because for BLD it helps you know EXACTLY what you've done; the stickers that come with the Edison are already very nice PVC ones; the C4Y ones must be replaced by either a Bright CS set or a Studio Cube set since I find the ones they give you are hard to recognize with.
Edison's though suck for OH since they're heavier and stiffer (noticeably, but not so much for 2H, especially for PLL attacks!), that's the only con I can think of; that and the cost, obviously.
Is it that much better?
