Having spent time with GJM training and knowing how technically proficient he is as well as amazing level of twitch reflexes, the speed in which the 43X slide is running versus the 48 allows him to see what he needs to faster. The have very different things I am looking for and with my arthritis and grip issues, soft Shooting is more important to me and I prefer the lesser slide speed of the 48. I have pretty much decided to really commit to spending a lot of my future time with the two guns that cause me a pained decision every day when I am deciding what to carry...the G48 or my PX4CC. I will likely be playing with a small red dot on the G48 as well. What has been happening lately due to schedule is the G48 is my default travel and driving gun and the PX4CC for everything else.