sorry but i thought it was a general question and voted without plants but after seeing the actual set up the tank looks pretty good with the fake ones.The plant master is now doing fake plants though?you are like my "plant guy idol"
I've seen you do some seriously amazing stuff with plants but I know you wont stay away long anyway.
Both setups look pretty good, but I like without a little better. Maybe adding something for height on the right side of the without would give it that final touch.
With plants is the way to go! Your with plants set up just looks like more of where the discus would like to live and where they come from. Very Natural even with fake plants. The pics with out plants looks like the discus are living in the dead part of the "Flooded River". The term used for Amazonian environment where these fishes thrive. So put plants back please.