I also bought a Bose noise cancelling headset 2y ago and I would say it is quite good, I think the only great alternatives in the same price range are from Sony, the Yamaha, Apple ones are much more expensive. Maybe other decent alternatives would be from technics or sennheiser?
But this is my opinion on Bose in general and not this specific product range. Personally I cant stand Bluetooth audio for anything else but background noise. I'm still amazed how a 192kbs mp3 can sound better with 5 euro earplugs compared to a 200+ euro Bluetooth headset with aptX support.
Eventually it doesn't matter at all, if you are happy with their product(s) and consider it money well spend, then who am I to judge.
Edit:
amiga-workbench 51 minutes ago
The most grating "feature" of Bluetooth is having headphones that support fancy AAC/AptX codecs, but as soon as you want to make use of its microphone it dumps the connection right back to A2DP.
I'm no longer amazed.
The bluetooth controller may well be the most expensive part of the headset.