Spark has the exact position I need for my apparently quirky ear canals, and a solid fit that keeps them in that

Only challenge I had was with finding the proper fit for the earbuds but they include lots of replacement earbud

The best thing I can say about these is the fact it is wireless and besides that has a good fit to my ears, I can do my activities listening to musics with no worries

I have plenty of really good headsets now (and a trail of expensive ones that I won't or can't use) so would probably be in a quandry if I had to purchase another set--the superb sound and fit of Q30's or the excellent sound/value of Spark