: Fast pairing process, Light, Great noise-cancellation, Great sound output
: Earpiece isn't the best design, Vibrations heard when the wire is hit/tapped against
Overall I have given the BBTGO2 4.5 stars due to it being a fantastic product with a few annoyances. The battery life is fairly good given the form factor and will last me a solid 5.5 hours of listening time between charges. It is easy to determine the battery levels, whether the sound-over voice reports the battery levels, or whether I look at my iPhone with a nice little battery-indicator at the top corner of the screen (nice integration, Apple!). I generally use this at the office where it can get quite loud and at the gym; both of which allow me to immerse into the music itself without any interference. The length of the cable is good enough to sit behind your neck, or in front tucked into your shirt, etc. but they do produce vibration sounds if they are hit/tapped against.
The phone functionality, which I don't use that often, produces great sound - but the other person will constantly ask you to repeat yourself unless the microphone is in front of your mouth.
The earpiece, whilst great with fitting into the ear canal (mostly thanks to its various sizes that are included in the box); I do find the stabiliser to be a bit 'iffy' in the sense that I tend to move around enough for it to be twist and allow the earpiece to be move and then fall out of my ear, and I'm therefore, constantly adjusting it. However the understanding is that they have really given something that attempts to cater for all, and that's fine by me!
And the most important is the quality of music; it sounds great for Dance/Trance/Electro/Dubstep without blowing your eardrums a part - but you need to get a tight seal to really hear the mids, highs and bass.
I obtained these at a special price brand new for (circa) $45 AUD, so the cons don't seem too bad for that price, however I believe they normally retail for around the $70-80 AUD mark.