Just a quick impression and it’s totally based on my personal preference/experience: just now received my new Astrox 100 ZZ. The Shaft feels as stiff as 88D and it’s SUPERRRRRR thin. Sometimes there’re some racket that you feel like it’s gonna be a gem as soon as you pick it up in your hand, and it feels like that to me. Unstrung, I can barely feel any head weight and trust me, i compared it with 88S(unstrung), and the head weight felt almost the same to me (my opinion). Gorgeous look. Can’t wait to try them on and see how they perform. Probably have to wait couple of months as all the facilities are closed due to COVID 19 issue.