You don't have to recharge the battery or worry about flaky bluetooth drivers.
hmmm, My " USG-BT359 Bluetooth GPS Navigation Receiver " (do a search) works perfect.
No matter how I use it with my system, start the PC first, or after the antenna, it works fine.
The wireless has an advantage: I leave the included cig charger hooked up in my car, this way it stays on all the time. When I start my carputer I have instant SAT locks, because the antenna still has them locked. (Because it wasn't turned off)
I also get plenty (about 6-8 Sats) allthough it sits inside my center console.