Is it really just a question of a backlit keyboard? Please help a non-techie person decide if/why I might want to upgrade already. I have the very last version 11. Only complaints: I'd love some more battery life AND a backlit keyboard, but aren't those two things incompatible? I'm in no rush to upgrade to Lion - I like to wait until kinks are out. Plus, I also use an older (2008 or 2009) Leopard desktop, and two big of an age difference makes things wonky.