From my research when I was thinking of getting some Discus, I also think part of it comes down to the actual fish you hae. Some seem to make better parents than others
keeping discus and successfuly breeding discus are 2 completely different prospects. breeding is a lot of hard work , even if you do get fry raising them is lots of work LOTS of freshly hatched brine shrimp LOTS of waterchanges LOTS of time and LOTS OF WORK not to mention expense.