Julie is an avid biker and runner in Christchurch, South Island of New Zealand.  She had previously owned Gen2 and here is what she had to say about Gen3

Gen3 has found the perfect balance between secure fit and comfort and is significantly better than the Gen2 product.  These earbuds are incredibly comfortable and easy to use.  I often forgot I even had them on when I was out biking or running which really speaks to their comfort. I had trouble with Gen2 version because they never really fitted well, and putting them on was a struggle-especially since I pull my hair behind my ears, making it tricky to find the right placement.  But with Gen3, the smaller design makes it easier to put them on.  The audio quality is great and I can still hear what's going on around me which is important when bikers, runners or cars are approaching.