Ebb and flow is one of the older systems, so it garnishes a lot of respect. It is what I used first. That being said, go with DWC. It is easier to set up, and easier to maintain, and easier to run, and it boasts better results.
If you go with a 5 gallon bucket for each plant the benefits are:
1)no pump needed, only an air stone, so if the power goes out your plant will live without the need to manually water. (assuming roots are established)
2)the plant adjusts to constant watering, and grows stronger as a result
3)each plant can be moved easily, as opposed to an ebb and flow table where they are where they are, making plant maintenance easier.
4)each plant has its own bucket, so each plant can be on its own nutrient cycle and harvested at a different time, if need be.
Downsides
1)multiple reservoir make nutrient changes take longer.
2)if the res needs to be heated you need to be x amount of aquarium heaters as opposed to 1
Hope this helped!