lc9 or s&w shield?
IMO the Shield is much more shooter friendly. Feels better in the hand, soft recoil, short smooth trigger. I have a 9mm Shield and an LCP and dad has an LC9. Shot the Shield and LC9 and a Taurus 709 Slim side by side. The Shield felt best to me and shot best as well. The LC9 second, but I couldn't hold a good group due to the long trigger pull. And the Taurus was horrible in all respects.
Shoot them and get what you like best.