I'm happy shooting mostly with my DSLR right now. I'm looking for a complementing camera that is lighter/smaller so I can take around in more casual situations. I have NO intention of buying additional lenses or accessories for this complement camera.
The smaller, lighter, fully-pocketable, silent-shuttered, faster-lensed RX100 prevails here.
I primarily photograph friends/ families in portraits and candids, so I do a decent amount of low-light shooting, so I am concerned about the speed of the 5N's kit lens, although the high ISO performance is terrific...
Yep. In Auto ISO, I have taken indoor shots with the RX100 at ISO 400, whereas the 5N with the kit lens used ISO 2000.
No doubt about it, I prefer my RX100 to my NEX-5N (especially with the kit lens), in absolutely every way imaginable.