I have a pair of the Plantronics Backbeat Go 2. For a $70 bluetooth set, they are more than adequate. I have used them daily for nearly a year with no major problems.
Battery life is approximately 4-5 hours for phone conversations; slightly less with louder and/or bass-heavy music. Recharge time is slower than I'd like (about 0.5x discharge time), but they're not bulky, are fully flexible (no hard parts between the buds), and very comfortable in my ears. I wear them around my neck constantly so there's no risk of damaging them in pockets. I also run 5-10k with them at a stretch with no discomfort or real risk of falling out.
My only complaint is there's no way to disable the 'play' button functionality on android devices over bluetooth (only with wired headsets, argh), but overall they're as close to the holy grail of bluetooth talking/running phone/music buds as I've ever found.