I have heard Beat's headphones before.
decided to have a feel for them again except at Target, because the rubbish display ones at Bestbuy are haha, Damaged(the SoloHD pair they have for display has its earcup removed)
the Quality of them is very dodgy, loud sounds of creaky plastic when you move the Headphone around.
Cheap feeling plastic too.. not the durable feeling ABS plastic you'd feel with sennheisers or most Headphones
but the creaky plastic... dear god
I wore the SoloHD and the Comfort is same to the Sony ZX100, which i would consider uncomfortable compared to say; Koss Portapros
i didnt pay much to sound when i tried them on, i only came to feel the aesthetics. and the Quality control is very horrid...
Grado's are all super/Hot glued all together and Handmade by Gradolabs; and they all still feel very well made especially for a good cost