The two I tried where both really good. The one at the very far end with the blue tarp is good but they really raised their prices the last couple years. Now that there is a lot more competition they may have smartened up.
The latest one I tried is towards the end of the road next to the little liquor store hut. I can't remember their name but the food is really good and reasonable for Macao. They are consistent as we went several times this year.
If you decide to eat there you can use their picnic tables for the day. You can also bring you own cooler full of drinks without any problems.
Hope you have a great time if you go.