I won't argue with the speed questions. My choice of ready is usually however dictated by tactical situation. High ready for tubular environments, Sul for stacking and moving between threat - non threat areas. I also have used a modified sul quite a bit, where the support hand is used not only as pivot to firing grip but as concealment to keep the bulk of the slide and upper frame from casual view. Useful for discreet entry, crowd scenarios, and vehicle egress in open view - scares the locals less.