Had this discussion some time in the past - same answer, maybe. 3 x balls for SS, 5 x balls for DMD.
I actually have mine set to the opposite . 3 balls for DMD and 5 balls for SS . These are basically the settings you would find on sited pins that I played when I was younger so I've stuck with it .
A lot of it comes down to the gameplay of the pin . Some games require 5 balls to get the most out of them . Others are just way too easy with 5 balls .
