Pros: Sound fantastic
Fit was an issue, these are HUGE! Not for small ears, and getting good seal is important to get the best out of them. Walking would break the seal with every step, even with foam tips. You really have to push them in to get them to stick, and even then they'd work their way out.
The cable also has a bendable bit embedded in them to make a U for wearing them over the ears. It was a nice feature but made putting them in your pocket difficult and the cable got tangled very easily.
Also, the bass driver in one of the earbuds died after one week. I felt overall the durability of the design was suspect and prone to failure. They didn't "feel" like the high end IEMs I was expecting. I sent them back to Amazon.