By cons I noticed his big big flaw: it is too heavy !! At the time, I did not pay attention, but the arch is just lead!
I wear glasses and while I have used for years the same type headphones (ear hook) low-end (10 in Secomp) without ever suffered from a lack of comfort, this one, I'm trying everything possible to find a comfortable position:
It is very heavy, you must wear the tight to hold it in place (sit at my desk) and it crushes you in the long run (glue me migraines) especially for eyeglass branches.
I even grafted the suspension system on my old helmet recovered: there is a real best, I can let the DESERRE max and keep it placed on the skull, I can keep the day but really, I'm not comfortable and long, I feel a bar on top of the skull due to the weight and I have to move on after a while.
I had had in-ear which I unfortunately broken, but I'm leaving this formula has nothing to do and comfort level that I can more easily use the subway ...
In short: if you want good sound for cheap, you do not wear glasses and you will not use it all day, it is a good plan if ...