2010 Kia Rio Stalling

I've had my 2010 kia rio for 4 years now. Bought at Goben in Madison, WI. The stalling just started 2 weeks ago... it stalled while I was turning in an intersection, thank goodness I was only on a backroad with low traffic volume. Then it stalled 2 more times while just parked in a parking stall. It stalled on main street in an intersection then! And it did not restart right away this time. So I figured it was time I took it to the auto shop. Of course the engine light only comes on and stays on during the stalling duration. I was dreading taking my vehicle in seeing as how this issue is common with this make and model. No code history came up when he inserted the plug in device... of course. So the car repairman looked in a data base of similar issues and fixes with my make and model. He suggested... crank shaft position sensor. Which is what I would have told him to replace first. He replaced the sensor in day and it costed $170. He did suggest maybe it could be wiring to the sensor as well, which he did not replace. Low and behold... my vehicle has stalled 2 times now again. It stalled for literally 1 second while I was passing at 40 mph on the right, in a 55 mph zone. Took it in to tell my car repairman, and he suggested to fill up my tank since it was just above E at that time. Today it stalled in a drive thru and thank goodness my fiance was with me to push it ahead and wait 10 minutes before it would restart. This is frustrating, annoying, and embarrassing. I'm gonna call my repair shop tomorrow and ask what should be done next. I'm gonna suggest the fuel pump and maybe the wiring to the crankshaft position sensor.
This vehicle has had spark plug coil issues. The original 3rd coil, which all were replaced one year ago by my father, was melted on the bottom! (You can get all 4 coils on Ebay for roughly $40 by the way!) This is also a common issue with the kia rios... I did just look at my coils, but not the spark plugs, and none are melted. I do also need my timing belt replaced as it is now at 120,000 miles and still the original! Any suggestions on what to do next, feel free. I'm glad I'm not the only one with these problems but this is really an unsafe vehicle, especially when at stop lights!