First of all, I'd recommend looking through here:
You might also wanna look into something like the Ultrasone Hifi-780.
I'm not convinced about the on-ear feature of the m-80...so i looked lp2 but you told me that they are bottom than the m-80, aren't they??
so, i have 2 questions:
1) could you tell me why they are bottom?? :) ...even if they are bottom, they are as well a very good product or no?? has it got great bass, but also good mids and highs??
2) if the lp2 aren't a very good product, do you know other headphones??
The LP2 has a ton of bass, and it's sometimes too much for some genres that don't need it. The mids sound a bit unnatural and the highs are quite recessed. It sounds great with electronic music, but not so great with most anything else.