"When considering a carry gun for personal defense there are a few categories i look at. In the interest of clarity i will label below my opinion in each category with a number out of 10 with 100pts possible.
Reliability 9/10... ~500 rd break-in period
Accuracy 8/10... combat accurate to 25yds
Capacity 10/10... 17+1 standard
size 8/10... long grip, holster cant needed
weight 9/10... 25oz
trigger 10/10... smooth consistent DA
sights 8/10... large front dot but no NS
Price 10/10... under $500 hard to beat
Ergonomics 10/10... slight recoil/aggressive texture
X-Factor 9/10... FN's ship with 3 mags, fully Ambidextrous, and a Beveled magwel coupled with a fit and finish that's detailed and pleasing.
Overall 91/100 FNS-9 has the rugged feel and simplicity of a gunfighters pistol like a glock but the finish and detail of an HK or Sig with a pretty attractive price point.