gdgt

since lion's a few days/weeks away from being properly released, i'm starting to think about how should i update my imac. do i just update over snow leopard (that's how i updated to snow leopard) or do i do a completely new install? if i do a new install, what's the best way of backing up restoring my data (itunes, photos, docs, etc)? i'm currently using time machine but i also have an extra 1tb drive i can copy all my data to. suggestions?