If it's a matter of the discus requiring 'too much' maintenance, keep in mind that there are folks on the forum who have kept them and consistently done one weekly water-change...
...I seem to remember Cichlid-Man mentioning this recently---I believe it was in Mushroomman's discus thread.
I have also had repeated dealings with an LFS employee who has kept his own discus without using any RO water whatsoever. He simply acclimated them to the Omaha tapwater (7.2-7.4 pH...considered high for discus) and they've done fine. (and no, he wasn't trying to sell me any at the time---he even recommended going to a different LFS for certain other fish, lol)
The 'high maintenance' may be accurate when it comes to wild discus, but it is my understanding that the majority of captive-bred discus can be acclimated quite well in waters considered 'less than ideal' for their species. Plus, it's not like you'd be breeding them...would you? lol
But, if you just feel like something else instead, then do whatever your gut tells you to do. Only you know best what type of setup you really want.
I'll quit pestering you since it sounds like you'd rather just do something other than discus, even though that 'something' might require the same amount of maintenance.
Now that doesn't mean that I won't be keeping an eye on this thread.
BV