Hi guys,
So which version is actually best to use? Retail or Beta?
Retail works in all games. Your choice comes down to Aim Assist - if you want more, go with the beta. If you want less, go with retail.
The reason you get more AA is because left-stick analog movement has an effect that can't be felt on digital WASD. The beta firmware makes WASD more analog-like and exhibits more AA as a result.
AA can be friend or foe, depending on the game, so try both and go with the FW you prefer.