I just got a 24/7 & love it. I'mcurious about the same thing- so far the only thing I can come up with is the new SA/DA trigger that has a very short reset for faster follow up shots & appeals more to traditionists who only shoot 1911's. I however shoot revolvers alot & the older 24/7 feels right at home to me with a long sweep & clean break & is simple enough that can be tailored a bit to shorten the trigger pull as there is more than enough power in the striker spring to touch off federal match primers I always use anyway. This pistol exceeded my accuraccy expectations & I'm gonna leave my revolver in the range bag and shoot this at my next action pistol shoot-it just points so naturally. Good luck!