I have one and really like it. Mine is pretty new, and I have really only had it to the range once. For my hands, the ergos are very good. Take-down and cleaning were very easy. I won't comment on accuracy, because I'm not a great shot, so any accuracy issues are likely as much me as they are the FNS.
I did find some less than ideal things though. The sights on the first one I looked at look as though they were done by a 5 year old with a Q-Tip dipped in white-out. (The second one was much better.) I considered going with (trying) the Advantage Tactical Sights like these,
but in the end, I ordered a Hi-Viz Fiber Optic front sight from Select Shooting Supplies. It does not have a great trigger, but I expect that this will get better as the gun "breaks in". Finally, it has proven to be a challenge to find accessories for it. Comp-Tec makes a holster for it, but since it is not that common of a firearm, do not expect anyone to have a holster in stock. I also found a place in the US called PYNTEK that was willing to do a custom Kydex holster, but his website is not set up for shipping to Canada. I have also not been able to find any additional magazines. (It comes with 3 mags.)
All in all, I think that it has very good value for what you get, but it is definitely not flawless. FWIW, I got mine (a two tone with a black polymer frame & stainless slide) on sale at Al Flaherty's (Forum sponsor) for $639.
