i just got the Nex-5 2 weeks ago. i LOVE IT. its very small, even with the larger of the kit lenses on it (18-55mm) i got it mainly because i wanted DSLR quality pictures, in an easy to use small package. this camera is great for people who dont want a crap load of options, but again want excellent pictures.... i took a panoramic photo of the mountains a few days ago....and its really an amazing little camera..... its no canon t2i by any means, but its simple to use and small. i got the 2 lens kit with a 16mm and 18-55mm lenses. there is another lens the 18-200mm lens.
as of now its only got 3 lenses, but there are i think 4 more to be released this year, PLUS third party lens companies like sigma are going to be releasing some soon.
i completely recommend this camera to someone who wants point and shoot easiness with DSLR quality pics.
dpreview has a whole forum just for the Nex cameras...its here
you may have to log in to see it, but i spent like a month on here reading as much as i could to help my decision.
good luck on your choice
In short, generally the advice is good, but once you start getting into the nitty-gritty you're going to want to move to more specialized forums.