First of all, to my relief, SPA BLUE is more like light blue-grey than the slightly neon color it looks like in the pictures. A nice, professional color which I don't need to hide under my hair!It took minutes to set up with my Samsung a870 phone, and it feels great on my ear. I have never gotten used to ear buds, so maybe I'm not comparing it to how secure those feel. Many H500 reviewers have complained that it feels like it's going to fall off - it doesn't feel that way to me, it just doesn't feel like it's either nailed to my head or jammed way into my ear canal. I consider this a plus! It's very comfortable and unobtrusive, and I can wear it for ages without feeling like my ear is swelling. BTW, I often wear glasses or shades.So far, all calls to land lines and cell phones have gotten rave reviews from the receivers, even when made from my very noisy old Honda CR-V. From my end, the call clarity is better than using the phone by itself. I didn't even have to adjust either the phone or headset volumes.Based on other customer reviews, I didn't have super expectations for this headset: I just figured it was decent for the price and would be more convenient in the car than a corded headset. But I'm absolutely delighted with this item, and am actually using my cell phone a lot more because of it!