Truelock long beard choke

[Brs2427]

Last season I purchased the truelock heavy weight 7 choke for my wife's montefelteo and i was just blown away by how great it patterned. That has me wanting to try one of their specific longboard chokes in my sbe2. Does anyone have any experience with this choke? I am also torn about what shot size to get it in. What do y'all prefer 4s 5s or 6s.