I know this has been discussed before, but as technology continues to improve, I figured I'd start a new thread. For those of you who listen to music on road, what type (make & model) wireless speaker do you use? I have a jambox by jawbone and it's getting tired. The battery no longer lasts a full day, and it's impossible to hear over the sound of the old T444 powered trucks. If someone has one that they are very happy with, I would like to hear about it.