Received my Priomo8's from the June drop this past Tuesday, so I have had a few days; probably 12+ hours of listening time with them. I am coming from Shure SE215 as my primary IEM's. First of all I would say that these are a definite upgrade to the SE215 with respect to clarity, instrument placement, and the width of the sound stage. I found the bass, mids, and treble to be distinct, and clear. Listening to a Dead &Co. webcast on Wednesday night; Mayer's and Weir's guitars were clearly separate, and distinguishable in the mix. The bass on the Primo8's is not exaggerated. I found it to be more than adequate, and present when called for...definitely to my liking. Going back to the SE215 for a brief listen left me feeling that they were muddy, congested, overly bassy, and lacking in treble. As with any other IEM, tip selection and fit are critical to getting the best possible sound . I preferred the Westone Star tips ( 12 mm OD x 14 mm long, red) with the SE215, and found this to be true for the Primo8's, as well. The Comply tips are also acceptable, and provide better isolation than the Westone tips, with a bit stronger bass (probably due to better seal), but I find them somewhat fatiguing. I tend to only use the Comply tips for air travel. It is good to have choices. While price is not the only consideration, for me, it has an influence on my buying decisions. I have never heard, and may never hear, a $500 IEM, so I would not venture a guess as to the Primo8's price/performance at the MSRP. I would, however, give it high marks at the drop price.