First of all, thanks for the info... good to know as I'm looking to upgrade from my BT200 to a BT250 and was looking at the BT250v as well.
Second, as someone who has a BT200 which looks just like the other two, you do still get strange looks in airports as you appear to be talking to yourself. And if you are done talking but don't bother taking the headset off, everyone behind you sees this funny thing hanging on the back of your ear with a bright blue blinking light.
-Eric