All this talk of ML and I've just rolled back to SL. Does everything I need, Lion overcomplicated things and broke things in my experience. Won't be ML-ing.
The problem with rolling back to SL is that it's now, as far as we can tell, regarded as obsolete by Apple. Safari 6.0 is available for ML and Lion and fixed a massive list of security vulnerabilities, but it's not available for Snow Leopard.
It's definitely something to take into consideration if you plan to run an old operating system.