What communcation devices do you all use?

With the VSTAR, I had a CB set up, used the J&M handlebar CB, put speakers, mic into my helmet. My husband still has a CB radio on his bike. Now with the Kawi Vulcan S, I'm considering getting something.

In a perfect world, all comm devices could speak to each other, but I don't think we are there yet.

What do you have? Recommendations? Suggestions? Your experience with good integration with other devices (GPS on a phone, or a GPS, etc, etc.)