I am tired of speaking about tips in this thread...but...I popped on my JVC Spiraldot tips, the ML size and have been having great results with them the last week or so. They definitely have a more mid-focused sound to my ears. More emphasis on vocals and guitars. It's really quite pleasant. One thing about the JVCs, they provide a much more consistent fit and they also don't cause my ears to sweat as much or produce as much wet wax. Something the Sony tips are terrible with to me for some reason. With the Sony hybrid tips, I have to remove them from my ears at least once every two hours and dry them off and dry out my ear canals. Another thing with the JVCs, due to their stubby design and wide bore tip, I don't experience a change in sound when I look down. The Sony Hybrids become muffled if I look down all that much. Like if I were reading a book, for example. Not a problem with the JVCs.
Usually what happens when I switch out tips on my M9 is I always like the new tips and swear by them. Maybe I use them for a week or so but then, out of curiosity, I inevitably switch back to the Sony Hybrids I'm blown away by how much better the Sonys sound. Maybe that will happen this time but there's no doubt the JVCs provide a better experience as far as fit/comfort is concerned. The Sony tips are just weird in that the same size doesn't always work for me. I have two sizes I always have to rotate out to maintain a good fit.