i shoot a bob lee stick 53 @28 and 2216 fly awesome. i see a lot of trad shooters use 2216. about split vs. 3 under its a battle ive fought for a while. i have tried both and 3 under seems to be easier for a smooth release. i should say 3 under is the best, especially for a new shooter but i like split just because it feels more natural to me and im caught up on the fact that all the legends, Bear, Pearson, Hill,ect. shot split. i guess you just have to do what feels the best to you. ask 10 people and you'll probably get 10 different answers. just have fun. oh, and yes split and 3 under have different knock points(if that is what tiller settings mean.)