Pros: Comfortable, clean sound stage, no bloat
Cons: tips are hard to get off, putting them on can be a struggle, price
Comfortable: Coming from a few different buds and a few different IEMs these felt like a dream to wear for more than 4 hours at a time. That's my biggest complaint with headphones and IEMs is the fatigue that comes with wearing them for long periods of time. The around the ear shape shifts the weight from the canal to the back of the ear, making them infinitely more comfortable. Because I have two different sized canals, I had to use to different tips on each side. It does help in recognizing which way to put them in :).
Clean Sound Stage: Nothing sounds bloated to me in one way. They're not as clean as my ER4PT, but I like these better due to the comfort. (I thought the ER4PT were the most uncomfortable headphones I had ever used). Because I am no longer in pain while listening, I can really grasp the strong lows and mids that were absent from previous headphones.They can be a little bassy, but I just compensate with the EQ.
The Tips: I thought I actually broke the headphones trying to heman the tips off. I also thought ripped every pair of tips that I tried to get off. Neither of which are true, but man did they make it hard. I ended up using the glide style tips because I could never get the foam ones in before they had already reformed -_-.
Putting them On: This is my first time with IEMs that go over the ear, and I spent about 2 hours trying to get them on right. Lots of youtube videos and fiddling. I found the right way and got the isolation that I needed to make these headphones shine.
Overview: They don't sound nearly as good as the ER4PT for the price, but for the comfort, the tradeoff worth it for me. If I had the money I would have jumped to the 525, which I recommend, but se la vie. Hope this helps someone a little bit.