I went the BB route.
I like the NNR benefits of a DSB, but that's about it.
Sand looks good on the bottom when it's new and clean but almost every tank with sand I've seen locally starts to look dirty after a while and is more aesthetically unappealing to me than bare glass.
I get to see the detritus that collects on mine (yes, even with lots of flow - two tunze 6100's) and can't imagine letting that collect unseen on a DSB.
Since I can see mine, I just siphon it out every so often.
I spend my time looking at my fish and coral, not the sand.
I like the NNR benefits of a DSB, but that's about it.
Sand looks good on the bottom when it's new and clean but almost every tank with sand I've seen locally starts to look dirty after a while and is more aesthetically unappealing to me than bare glass.
I get to see the detritus that collects on mine (yes, even with lots of flow - two tunze 6100's) and can't imagine letting that collect unseen on a DSB.
Since I can see mine, I just siphon it out every so often.
I spend my time looking at my fish and coral, not the sand.