I'd like to say I'm in no way a audiophile or have any idea about sound apart from the fact i can tell the difference between good headphones and bad ones. This is the first set of decent headphones I've had. I listen to bass heavy music but i do have wider tastes.
I've been used to cheap IEM's for a while (Sennheisers Cx300) and so decided too take the plunge. I couldn't decide between the m80 or LP2 and chose the LP2.
I've used them since Christmas of and on and after some minor wear in. They are amazing. The comfort, styling and durability is second to none. This is something i was drawn into to all my IEM's breaking within 12 months of constant use. I haven't had any issue in the build department. Fo me the sound of the LP2's is great. There is a clear distinction between the lows and mids. I heard that the bass on the LP's was over the top which i didn't want but for me the LP2's have it just right, it's punchy and heavy but not overpowering. As i said I'm not really in the right position to evaluate the headphones sonically but if you want a good quality set of headphones which have an all round great sound then the LP2's are great.
Also they have become better with more listening.
One problem i have noticed is a significant amount of sound bleed when the volume is high.
I hope i have been of some help. Better than Beats and less cliched