u/Confident_Level4624

I am new to modding minecraft. I wanted to know which modpack is better? When I first searched it I came to know that it was new and not done yet when it was released 8 months ago. Posts as new as 5 months say that ATM9TTS is still better. But now that I know that they have started working on ATM11 ig ATM10TTS is finished so should I play ATM10TTS or ATM9TTS.
TLDR: What is better ATM10TTS or ATM9TTS for a new player.