Okay, well I was just playing around with my cubes today, and thought up of hybridizing my e and a. I was disappointed because I thought that an a core and e cubies would be good, because I thought the cubies are what made E's fast. Though to my surprise when I tried the mirror form, it was awesome! I thought that e cores sucked because in the normal diansheng, it was terrible at cutting corners, and thought that an a core would help. Though I soon figured out later that the cubies for diansheng just suck! I tried a lot of different cubies on the diansheng core, and they were all good! (loose at first, so you have to tighten, or maybe I just like tighter cubes..) But anyways, I just wanted to share this info in case nobody knew about it, and also, wondering if someone could try it with f cubies, because that might be good..But seriously, it's awesome, TRY IT!