I got a 8 GB iPhone 3GS. Because of the limited space, I'm considering getting myself an iTunes Match subscription enabling me access to my 18 GB music collection through the cloud. Is it a good idea? I'm not based in USA/Europe so Spotify ain't an option for me. Getting another phone is also not an option. Also, Can smart playlists help me manage iTunes match so that I don't download/stream too much stuff?