I shoot 3 under. I couldn't imagine changing now. But if I had to start over, I would shoot split finger. It just makes more sense. Most bows are tillered for split. You have even pressure below and above arrow. I have had tuning issues with split figer tillered bows with me shooting 3 under.

Reason I went to 3 under was the first longbow was too short and had too much finger pinch. If I had one of those fancy tabs, that are pinchless, I would be shooting split today.