Snail ID good/bad?

[Matt850]

Found a couple of these boogers lately and was trying to see if anyone could ID them for me. I have never seen them before and they are rather small, about 1/4" or maybe slightly bigger. Sorry about the slightly blurry pic. These guys are pretty small and My camera skills aren't the best!

 

[AJSTITAN14]

Collonista snails. beneficial although they will breed like crazy and you will see lots of them. That might be good or bad depending on your opinion of their behavior.

http://www.wetwebmedia.com/snailidf14.htm

 

[Matt850]

Glad to see, I was starting to think that they looked a bit like sundial snails although not exactly. Thanks for the ID thats them for sure.

 

[650-IS350]

Def NOT sundials