A lot of people claim that the trigger on a series 80 style 1911 isn't as good (or able to be tuned) as well as those on series 70 pistols, or those without a FPS. I don't know about that...I've owned a couple of series 80 Colts, and the triggers seemed fine to me. What is a concern to me is that the series 80 style pistols are somewhat more difficult to disassemble/reassemble for me...may not be for everyone.

Modern series 70 style pistols use a lightweight (usually titanium) firing pin and a heavier spring, to overcome the inertia problem if the pistol is dropped. I prefer the series 70 style, and have no concerns about a modern 1911 (such as my SR1911) being safe.