Amperex 7316 long plate vs short plate

Has anybody compared the two versions made in Holland? If so, what are your observations?
Have both, really not sure it makes any difference in my preamp. I think the shorter plate (14mm vs 17mm) was simply a refinement of the original plate. The 7316 is my favorite tube type in my Odyssey Candela, and I've rolled about 15 different kinds. Now, you'll hear suggestions that the shorter plate is prone to less microphonics. I honestly can't hear any difference.