I really think it does not matter which one you adopt, as long as everyone goes along with it. Sometimes that can be hard as it seems that some styles don't agree with peoples tases. I.e. it comes down to arguing about whether prefixing all member variable with m_ is pretty or not.
I have been using and modifying the Geosoft standards for a while, these are for C++. There are some other at the what-is-your-favorite-coding-guidelines-checklist thread
