the 1st one you listed is the stock one...
the 2nd one you listed is the optional thin gasket, which will bump up compression a touch, and you very well may need to run a little mix of race gas with pump gas to prevent pinging.
and the 3rd one you listed is the optional thick gasket, which will lower compression a touch, but should give you a bit of boost on the top end of the revs.
**EDIT**
I'm pretty sure there's a bunch of old threads on here about them...try doing a "head gasket option" search.