Here is a good article you might enjoy..
http://www.reefkeeping.com/issues/2004-05/rs/
I've never been a fan of Turbo Snails. I have Banded Trochus snails and Astrea Snails in my tank. Astreas are sometimes called Turbo Snails as well, so look at the shell shapes in the article..
Both species are all over the glass, the substrate and the rocks in my tank. I barely touch my glass scraper. These two species also seem to have better survival rates, for me anyway. I introduced 6 Astrea and 3 Banded Trochus into my take a couple of months ago, and all 9 are still alive and active...