forgiven racket after voltric z-force

Hi,

I currently use a voltric Z-force after a year with a voltric 80. I plan to use it still in training but want something more forgiven to play in tournements.
I plan to buy a head-heavy or balanced racket, but with a medium-stiff shaft. I see that Kason F9 or YY Voltric 70 can be a good choice. What do you think, do you have any other models to suggest ?
And I can't test before buying, infortunately...

Thank you in advance
Koo&Tan