I had a plantronics tranditional headphone MX110 before, and I really like the comfort and sound quality of the product. So, I try this new MX505.Although I am very impress by the sound quality and unique design, it doesn't fit me too well. Let me summarize the Pros and Cons first:Pro:Sound qualityDesign fit almost every ear type: the grey area on the ear piece is actually, soft plastic. It makes it very easy to adjust and fairly comfortable to wear.it comes with a spare voice tubesvolumn adjustable controlCon:the cord is a little short for me, and it is around 8 cm shorter than my old MX110. I prefer to put the phone on a further distance when I use the phone. So, it won't bother me when I work. If the cord is at least 30 cm or 50cm longer, it would be great.The design doesn't fit me well... or it wouldn't wear for long comfortably. The main reason is that it is "soft" plastic, not cushioned like the MX110. Yes, it is able to clip onto the ear much better than other design. I still feel the "clip plain" after wearing it for 10 min. It is not a very painful feeling, just not very comfortable.The volumn control is good, but the build quality is not. It uses rather cheap or thin plastic shell. Additionally, the "Mute" button is not the "soft push" eletonic type. It is the older switch design type, which you push to the right is "Mute" and push to the left is "Unmute". It is rather chessy to me.My main suggestion to plantronic is that, please add the cushion on the "ear clip". Secondly, please either take out the volumn control or improve it or offer longer cord. I mean, if the cord is not long enough, why do you need a volumn control?