IME it is much easier to look after discus in a BB- especially seeing as i was new to keeping them when i set up their tank. Poor water quality is the main problem with keeping them happy and in a BB its way easier. My BB tank has two potted plants- a lotus and a amazon sword.
I dont think they are overly hard to look after either, good clean water of good quality is pretty much all you need. However aggression problems are a pain in the behind, especially when you have pairs forming/formed hence why it is reccomended to have a few.
Best of luck, they are awesome fish!