I bought these to replace a pair of Sennheiser OMX clip-on earphones.
Received them today and have been listening for a couple of hours. In short, I'm very impressed. If I was to buy a replacement pair of my clip-on earphones, they'd be the same price as these, but the PX200 is a better pair of headphones.
I like the design. I think full-cups and pads are coming back into fashion a bit. They do feel a little flimsy because they're foldable and so light weight. In fact, they feel rather precious. There's a lot of metal in the construction so I bet they're stronger than my first initial tactile feel of them. They also come with a well designed, if slightly bulky, carry case, with in built cable management.
With regards to the case, it's not hard to use at all. I'll definitely be using it in case the PX200s get crushed in my bag by some heavy books or something.
Burning in the headphones also makes a big difference. Clearly, after only a couple of hours of use they're not going to be broken in yet. Just mediate the volume you listen to things at, keep it at a modest level for a week, slowly working up to the full volume. The bass is maturing already. Listening to The XX is quite heavenly.
I bought these over the PX100s because I'd prefer a full-cup for the noise and sound isolation it provides. It is pretty good actually. Better than having a bud in your ear.
So in conclusion, I'm very impressed already. They certainly sound and look like they cost me more than under twenty quid. I probably wouldn't have paid full price for them. But at around this price point, they're a terrific bargain.
Headphones are always better than earphones for proper listening. These mini headphones beat even larger pairs that I've used in the past. More punchy, crisper.