Among the three types of rackets, LYD and F9 belong to high-end rackets, and 80TD belongs to mid-end rackets (high-end rackets are N80, and 80TD belongs to the low-end version of N80).

LYD belongs to the speed doubles frontcourt racket, except for the backcourt and high attack, everything else is good.

80TD is more suitable for attack, and other aspects are also considered. Considering from the performance coordinates alone, it is closer to your requirements than LYD and F9, but the elasticity and overall stability of the middle bar are not as good as the other two.

Before F9, it was Fu Haifeng's racket. It is said that Fu still holds the record of killing the ball at the highest speed in the game, which should be a racket suitable for attack. But in fact, Fengyun's combined racket has different advantages and disadvantages from other players, so Fu's racket is more suitable for quick response and frontcourt. Of course, the F9 attack is not impossible, but for the attack, there are certain requirements for strength and action. And C7 is more suitable for attack in Fengyun shooting.

But on the whole, I think you should choose F9 among the three rackets, which is relatively easier to use and more stable, and the hitting stroke is softer and more suitable for amateurs.