sand bed options?

Hi,

Anyone have an opinion on the next best alternative to a DSB? I just
don't like the appearance of 4" of sand, or 2" for that matter. No
offense meant--I know most of you use this method. But I've had a 30
gallon FOWLR with 3/4" of crushed coral and a canister filter running
for 10 years with zero nitrates, so I don't see the value of a DSB for
me.

Now that I'm upgrading to a larger tank, I would like to replace the
crushed coral with a thin layer of some type of a finer grain sand for
the sake of appearance. Or should I just stick with what has worked
for me? Or maybe, mix the two. Any suggestions?

Thanks,

Grant