Small snails that do a good job?

[mus]

Hi i was wondering if there any snails which remain fairly small but do a good job of cleaning.

I generally find the larger ones less attactive but would like something small which would clean my tank.

 

[itsgracia]

I've read nerites but I never had them.

 

[BigJim]

Check out nerite snails. They're not quite as big as a mystery snail, but most of them have very attractive shells. They're champion algae eaters too.