I've moved from cubase to SO becouse I just couldn't take the interface any more.I love SO so far, but I'm really missing the chord track from cubase; Its really nice for a singer songwriter like me to be able to lay out the song even before tracking starts, and I can run a quick backup track off the midi output to start things off when songwriting/recording.It's very handy, and can really speed up the initial phase of a song for me.
I would actually be happy with just a quick way to enter chord symbols into the timeline so I can arrange/record on the fly, but the midi out is a nice touch for feeding arpeggiators and harmonizers, it just makes the whole song layout process much clearer.