>>31696932It's hard to quanitify accurately without knowing drop rates on time boosters
Mostly it depends on how well you can manage your time
If you're able to check on your game and win a match for a new booster when your earliest one finishes you might as well do that
The more you open, the better the chance you get
The one I make an exception for is rainbow boosters because the guaranteed rare or higher is actually a huge boost compared to the other ones