Hawkeye0001
The Blulink is not too bad to be honest. If you are looking for the Music/Cellphone interface with Bluetooth, I do hear a lot of good words of Flightcell Pro which produced in New Zealand. It can connect with multi devices including cell phone, MP3/Ipod, GPS, satellite phone as well as Bluetooth connection. However, the price is quite expensive comparing with other adaptor or even Blulink. Also, the pro box is quite large as well. One good thing is pro box is rechargeable, so you may not need a lot of batteries.
The other Bluetooth choice of Commlink pro Angel which includes a built in stereo, Bluetooth wireless technology, and a multitude of input and output jacks, as well as an integrated E6B flight computer.
However, to be honest, they are quite expensive and I don't really often use the phone function (make call) during flying, so I haven't tried those products yet. And sound quality of music in Bluetooth should be not good as the wired connection. Its will use a lot of battery in your device as well. (Although I do hear that the sound quality in Flightcell is very good)
If I need the Bluetooth connection and phone function, I will definitely look at those two products (Flightcell pro and Commlinkpro Angel)
If you consider wired options, have a look in Matchbox FC-1, Vx Makerplane ASX-2B and Safetycell for phone/music interface.
For me, I will probably choose the PS Engineering the Muse as the unique soft mute feature, however it only support one input for music only.
Hope it help