I'm a owner of a 12,15,17 and now a 2019 EX Optima. The Safety features the blind spot, lane assist and smart Cruz is amazing. The car is very comfortable. Don't kid yourself the 1.6 turbo has nice power. on the 2019 I got thrown a curve ball. on the EX it does come with a DCT Transmission which is a 7 speed. what it is it's really a manual transmission acting like a automatic. I have noticed at lower speeds or launch speeds 2 to 3 mph it might jerk or shake a little. (just like a manual transmission.) I did listen to a lot of youtube and read documents about the DCT and learned that this is normal, but also you need to change some driving habits a bit (example don't creep forward or the transmission can slip) just like a manual. After changing my driving habits the launch is smoother and the rest of the ride is great. I am disappointed that the sales person didn't tell me I was getting a DCT transmission or if it was in the specs that i wasn't told that a DCT is different from an automatic. I am also disappointed that KIA doesn't tell you how to care for this type of transmission I learned about it in my videos. As I am getting used to the DCT I am enjoying it. compared to my 2017 this car is very fast, and also I am saving gas and once you know how to drive it it's very comfortable. to conclude if you are looking for the smoothness of an automatic transmission and have turbo go with the SX. If you like to save some gas and have a nice turbo feel (but at an entry level) and don't mind the feel of a manual transmission go with this car, the EX. The EX is still super fast an a great car.