[Q] Which Firmware to choose? topic

Good Afternoon everybody, like many more i still havent received my OTA notice on my s6 and i was wondering if i should manually update my device via ODIN and the many firmware updates available. I have read too many a problems regrding the device but really what mine suffers from is veeery bad battery performance and also the RAM issue which also leads to a bit of overheating. Find below my s6's details:

h**p://s29.postimg.org/j8w4tqybr/Screenshot_2015_05_16_18_41_57.png

(cant post outside links sorry)

thanks a lot in advance for any answers and time spent

cheers