Gawd, man, I have the LC9 and like it and carry it. But if I had the dough laying around I'd get the sig in a heartbeat (And I haven't even tried it yet, except for coonfingering it at the gun store). The trigger on the LC9 is ... different. Let's just say you'll need to train with it. It unlike anything else I've ever shot. That being said, it's easy in the pocket. I believe the sig would be heavier.
Look, buy the sig and if you don't like it I'll trade ya.
Just sold the LC9 with crimson trace... not a bad gun at all for the price! Not a fan of the trigger at all, but if you put itin perspective DAO is more like a revolver set up... Very safe set up for CCW. Dont know much about the SIG. If I had it to do over I would not buy the LC9. Quality was great just a personal preference.
I have more extensive experience with the p238 and lcp.. So the 380 version of these two guns. The Sig is far superior and I recommend it highly. I want to buy a 938 when I have the money, so if you can afford it that is the direction I would go. I see you posted a few weeks back, have you made a decision or purchased a gun yet?