The DeWalt saw is considered a contractor saw, not a production saw. However it should last longer than yours did. My first DeWalt lasted about ten years with only having to replace blade clamps and thumb screws. I'm on my second DeWalt saw and I have a backup just in case my primary saw breaks down.
When it was time to replace my first DeWalt saw, I also considered the EX 21. I didn't like the smaller table on the EX and I didn't like the coating on the table either. And since I was used to cutting on the DeWalt, I bought the DeWalt knowing its limitations and shortcomings.
I have never used a Hawk. I would never consider buying a saw without being able to try it out. The new Jet saw is not top feed friendly so that one is out.
So when it's time for a new saw, I will probably go with another DeWalt saw.