You've hit on something very important, the motor!
I'll be honest, I got rid of my Dewalt because I felt I was over powering it. Did it ever fail? No. Did it ever come close to failing? No. Did it do everything I asked it to? Yes.
I just felt it was time to move to the best available. Once I got to a Baldor motor it made a huge difference in my opinion on tile saws. You routinely hear about guys with old Felker or Target saws that are 10, 15 & even 20 years old. There is no cheap plastic on my big Felker saw to break. So for me, the $200 extra spent on the Felker over a Dewalt is chump change.
If you're gonna consider low end stuff like Chicago Electric, than you mind as well shop Ryobi, Husky and QEP saws too. Don't let some internet tool review site tell you what is good. Do your own search and look what other professional contractors are using and saying about a saw before deciding to buy one.