It's tough to offer a useful opinion when one doesn't know what the other person likes to hear in a guitar. I've played a Rainsong and was underwhelmed. My own choice would be the Taylor over the Rainsong in a flash.
On the other hand, the proprietor of my local high-end guitar emporium handed me a
CA C.O.T.™ not long ago. When I saw that it was a composite I started to hand it back to him but he insisted I give it a try. I wound up sitting there playing the guitar for nearly an hour. Even though I wanted to hate the guitar, I loved it. It really sounded like a wooden guitar. I haven't actually purchased one yet but there may be a CA somewhere in my future. These guys clearly understand something about tone production that the others are missing.
If you think you'd like a composite guitar you should definately go play a CA somewhere.