Let me try to clear some things up. I am an airline pilot, and I deal with this everyday.
I do not know the FAA's position on Bluetooth headsets, but I do not they have restricted bluetooth headsets for flight crews to the point where no one is trying to manufacture them. That may give an idea on their position.
There have been cases of electronic devices interfering with aircraft systems, the only ones I know off are communication systems. In fact if you are on an iPhone and on at&t we can here incoming calls in our radios. We still uses antiquated HF radios when traveling over the ocean and something as simple as a cassette player spinning magnetic tape could interfere with communication. Is it going to be enough to take an airplane down? Not in the slightest, but it could cause distractions. Now that being said, we have made groundbreaking advancements in aircraft systems and operations. I know of no cases within the past 20 years where electronic devices have interfered with aircraft systems. I do not know the FAA stance, but if there is a possibility of interference when flying they remove all issues. This would mean no electronic devices for the critical phases of flight.
Bluetooth operates on a frequency not even close to what we use for communication, navigation, and aircraft serial bus communication. There is virtually no way there would be an interference. I have been on a few flights where I know, for sure, there was usage of a bluetooth device. Yes the penalty is a fine in the amount of 25,000 for non compliance, but when was the last time you heard that being enforced. Besides do you really think the flight attendant knows, or cares, that you are using a wired headset vs a bluetooth one?
I have heard the plantronics are pretty solid headphones. Eventually I am going to get a pair as I wand the earbuds so I can use them while riding and other various things. I have read many places that the motorollas last about a year and then malfunction in some way.
crabby