Your opinions regarding bare bottom vs shallow sand bed vs deep sand bed

[SeaHorse_Fanatic]

Tried going bb but didn't like the look for my reef tank & the brain coral was getting damaged from rubbing against glass (flow is fairly high in the tank but directed well above the brain). Now everything & everyone is much happier with a thin layer of sand. I got a sand-sifting sea hare (I call it a sea mouse) which is dark grey-brown with tiny green spots to keep the sandbed clean.

Anthony