Opinions/poll? which do you prefer...?

Question

in an aquarium, which do you prefer:

barebottom

sand

large smooth gravel

small gravel

please list why you like the one you chose.

best explanation will get ten points.

Answer 1

Large smooth stones on the bottom of the aquarium is really cool, every marine creature I've ever had seems to like them, they are very classy but very BA at the same time.

Answer 2

i like sand i have 2 types of sand in my tanks, i have real sand (play sand) in my large tank and white silica sand in my community tank. it looks so clean, keeps clean, the fish and cat fish love it. it looks natural and is more modern and works well with anything like drift wood, rock pebbles etc....