I am trying to figure out which phone or OS works most smoothly with the Model S. For those out with a Model S and a phone they love, what are the features that you like best about the combination? What kind of voice commands work? Will the car read and reply to texts with voice commands through your phone's bluetooth/USB? Has anyone attempted to connect to their phone's network via USB connection? I'm not looking for a debate about what phone or OS is best, just which features you enjoy, what do you feel is missing, what doesn't work, etc. Has anyone been disappointed with their smartphone integration? Surprised by an unexpected feature?