Hello, I have been using the Li Ning N9II 3U (Medium Flex/Stiff + slightly HH IIRC) since around 2017 and it's my go to racket so far. I think my game has improved since then and I think it's time to upgrade. May be either more stiffer or more HH than my N9II. I play doubles 90-95% of time and like to play both near the net or rear depending on my partner. After browsing the forum for a few weeks I have landed on the below options. I would like to buy 1 or 2 of them depending on your recommendations. 1) Victor Thruster Falcon Enhanced 4U - (How does this compare to the TK Claw or Ryuga II ? Is it too even-blanced) 2) Li-Ning Turbocharging 75D 4U - If I can find it. 3) Yonex Astrox 77 PRO 4U 4) Yonex Astrox 88D Pro - Have tried this one once and it feels a bit sluggish but possibly I didn't spend enough time to get used to it or get the feel of it. Please let me know your thoughts and any other racket recommendations. Appreciate your advice. Thank you!