Communication setup and new cables

OK - finally (I think) I'm on the site.  Boy, a lot of buttons to push.  Anyway - I need some advise on two tech subjects.  Communications between rider/psgr. and bike-to-bike.  Does anyone have a good system that doesn't cost over $500?  auto-Com and J&M seem to have the best systems but they are costly.  I'd like to have one before riding out to Taos.  Also,  I'm thinking about changing out my brake and clutch cables.  Anyone got Motion Pro, Barnett or Russell cables and what do you think.  Ride safe and often...Tom