I've had the FiST for just over 10k miles now which is about the same I as what I had on my Sonic when I traded it in. The only things I can think of that the Sonic has on it is ride quality which is the trade off with handling, I'll gladly take the handling. The other is MPG by a substantial margin, but that's the power trade off.
If you want a DD that's comfortable and has enough to pass people go for the Sonic with the 1.4L.
If your one of us you already know