This is my first review on any kind of products that I've bought in the past. The ATH-PRO500MK2 has met all my needs and desires. I bought a pair of M50 after reading and watching countless reviews on them. I ended up returning my M50 because I felt like I wanted a little more bass response. I tumbled across these, and I thought they look better and has a decent size. It has detachable cable, and it comes with 2 cables (coiled/straight). The red finish on this headphone looks way better in person. Even though, the ear cups are smaller than the M50, they are still very comfortable. My first reaction when I listened to PRO500MK2 was overwhelming joy. The bass is just how I like it, not too much; therefore, you can still hear all the mids and highs clearly. It was a better experience than I had with the M50. At one time, I could not decide which one I should buy between PRO500 and M50. AFter I've tried both, I can assure you that if you are looking for a pair headphone to listen to music, then the PRO500MK2 is a better option for you than the M50. I bought mine from a seller from Japan, and the shipping took about a week.