I am currently playing an Astrox 88D, 4U and I am mostly happy with. Love the control, the feedback it gives me, stiffness, etc. For singles I see no need to look for a different racket. However i play mostly doubles - for fast paced doubles it is playable, but frame speed is a bit too slow. Back court is fine, but I find a bit lacking in front and mid court. So basically I am searching for something similar but with a little bit higher frame speed. A bit more flex would be ok (but not too much). It doesn't have to be as fast as a BS12, but frame speed should be somewhere between an AX88D 4U and a BS12 3U. Options I know and would love to get feedback on (other recommendations also highly appreciated!): N9ii/TC75 in 3U: maybe too flexy? Also maybe too fast when compared to AX88D? N7II/TC70 in 3U: Maybe too fast of a frame? AX88S in 3U: Not sure if it is really faster. Also it didn't feel as good feedback-wise as the AX88D (too flexy?) Help is much appreciated!