I am currently using the old blue BS12. It has served me well but I think it's time for a change since it's quite beat up and the frame is disfigured somewhat from clashing. I don't dare to strung it any higher than 20. I don't want to get another BS12. Looking for a racket that's more user friendly but still fast for doubles. Was looking to buy Kason F9 but can't find it in my area. Please do recommend a racket model that fits the description if you know any. Price is no issue.
I would consider user friendly voltric60 or victor lightfighter7400 for flex shaft. Never felt any arm discomfort with these. They are more defensive technical rackets, that still can provide setious and fast game decision. But these are mid-end compared to BS if you mind.
What about a Li Ning N50-II? It was the racket Fu Hai Feng used before switching to Kason F9. I'd say its pretty close being medium flex and even balance suitable for switching attack and defence.
Any beginner to intermediate level racket would do . If going top end then loo for medium stiffness and even balance.
li ning airstream 36 speed. very good maneuverability and fast for doubles. like it more than my bs12.