Here's the HU I want to upgrade to so I can use the BT module, my current HU doesn't support BT.
http://www.crutchfield.com/S-9iZktA9x4P ... V-700.html
And here's the module:
http://www.crutchfield.com/p_113BT300/K ... tml?tp=158
The main reason I am considering upgrading is because they just passed a law saying that you cannot talk on your phone and drive at the same time, or you can get a ticket. And yes the new law is that they can give you a ticket JUST for talking on your phone while driving, and it's a moving violation. This is in WA state. So I now have an interest in BT HU's. I don't want a BT ear piece, I gave my wife my super nice one because I didn't like it in my ear, and the speaker phone part of my phone doesn't cut while driving with all the road noise.
Now I could get the bigger brother to the KIV-700, the KIV-900 with built in BT, but the KIV-900 doesn't support the A2DP profile for music streaming, while the BT300 module does. So that's why I want the module instead of having it built in. I have an iPhone and I want to be able to stream my music wirelessly AND be able to answer my phone using my HU, and this seems to be the best way to go.
The reason why I chose Kenwood is because I have had nothing but awesome luck with my Kenwood units. I have pioneer and clarion HU's in the past, but nothing compares to my Kenwood for the price. So I am pretty much bent on using Kenwood stuff for my HU, unless you guys can point me in another/better direction

So ya, any insight to anyone using BT in the HU would be good! I want to go this route, and my stepdad might want to as well, so any tips or opinions are greatly appreciated! Thanks guys!