Well, i like rozenas control and grip, i expect the new rubber to be a little bit spinnier and faster but with great control for passive shots, basically an better all rounder tha rozena
No rubber can give you the control, on contrary a rubber challenges you and takes out the control from you, so less responsiveness, speed and spin -> more control, vice versa.
I also like Rozenas flat hits i would like the new rubber to be good for smashes too
So if you like flat hits, majority of hybrid and Chinese rubbers can fall out of our scope.
tenergy, fastarc, dignic etc will give you that.
I've considered Tenergy but i've tried it and i feel really difficult to use it on passive shots and blocks
It because Tenergy is much more spinnier, faster and responsive, fastarc G1 is less responsive and less easy to create spin so it's easier to use than tenergy, still more high-end spin and speed than rozena, if it's what you look for. But I'm repeating, its harder rubber so you need work on bit more effort to generate spin and speed than Tenergy.
But i was thinking about either tenergy 64 or tenergy 19, which One would u recommend?
I haven't used 64 but using 19 which is spinier option but generally said that 64 is easier to use, and better in flat shots and less spin sensitivity, of course less spin capacity. But I prefer t19 for easier spin creation to get an edge on matches while knowing I need more training on my block and serve receive technique.
FYI: I'm not giving advice for your skill or technique level, just based on your preference.
Otherwise, I may recommend using rozena until you master your technique that can adjust Tenergy or other monsters in couple sessions. (you don't need to take on yourself, it's just a disclaimer)