I work in NYC so I walk a lot, and I noticed that audio would drop out here and there. My first pair would have a drop out/blip here and there while walking. I actually already exchanged my first pair of Solo 3's because of connectivity issues.
After watching YouTube reviews and reading the comments on this thread, it looks like people are getting unbelievable range and connectivity out of their headphones. However, I do have a problem with connectivity. The ease of pairing is unbelievable, and the ease of switching between iPhone and iPad is a huge plus. I just bought the Solo 3's a few days ago.