I did not join this forum to trash KYMCO, so if anyone is offended I apologize.
The KYMCO is more agile, and therefore better for strictly city riding. It takes corners and turns more easily, and can zip around traffic.
The SYM is more of a highway bike. It is faster (74+ MPH vs 60 MPH GPS), and rides very nicely on the highway. I took the People S on the parkway, at 60 it is topped out, and it really whines! And it does not feel very stable. I did add the big Cupertini windshield (off for the summer) and Dr Pulley 14g sliders.
The SYM is OK on the street, but the center of gravity is different, and it is not as stable at low speeds. I dropped it in a parking lot standing still! Once moving however, the SYM is a better ride and much more stable, but a bit harder to make right turns, as you have to get a little more speed to be able to lean as the weight and center of gravity can drop the bike on a slow turn. The PeopleS is more like a moped, you can just lean it right over and recover.
So if you need strictly a city bike, the KYMCO is good. And air cooled leaves less to worry about. But for the suburbs, the SYM is just twice the bike. Better ride, MUCH more top end, MUCH better and smoother acceleration, highway capable.
OK< so that's my opinion. YMMV. And I have nothing against KYMCO, I own one!