What is the difference between all the Viscarias

Hi all,
I'm pretty sure there are a lotta guys who have asked similar questions but here's mine. My training partner played with someones old black tag fish-scale Viscaria and said it plays so much better than the new Viscaria (green hologram) and even better than a regular old Viscaria which he tried at the club. The only Viscarias I've tried are two of the green hologram ones so I can't say much about how the old ones play. My training partner is not some pro player and definitely not an expert on Viscarias and from what I've read fish scale ones don't play any better. I was also told by someone else that the new Viscarias are faster because of the poly ball (my partner said the old ones played faster) I don't know if this is true either. So how did Butterfly change the Viscaria since its introduction? Do the different tags/versions/series play differently? If so, why? Again I am sorry for annoying everyone with a very well known question but I couldn't find this information.

Welcome to the forum Zaid! I am hoping some of the members like Magic_M and some others who have deep knowledge can tell you if Btfly changed construction or thickness in different series of Viscaria. My favorite blade is a black tag series H, and I have a really good one that is an I. But not all the black tag ones I've had were unusually good and I sold a couple that didn't have serial numbers because they were not all that good. Of course its all relative. Ive never had a BAD Viscaria! And it is true, they are made of wood so there will always be occasional special ones regardless of series. Just luck. But it is a good question if there were systematic changes over time.