The HTC HD2 has amazing sound quality without an amp, but with an amp you begin to run into problems. My Fiio E11 is perfect for the size of the HD2, but the rubber bands make using a part of the screen impossible. To overcome this, I would recommend using a stickyback velcro and placing the base on your HD2 and the hooks on your amp. If you don't have an amp, you are going to find it extremely annoying to pause a song or even lowering the volume. The HTC rivals in sound quality, but not the design.

The LP2s are one of the best in class cans in the $150-200 price range in my opinion. As V-MODA's slogan suggests, these have absolutely no plastic on them. To fully experience these headphones, I would buy an amp. These headphones sound the best with house and electronic music. They are a very handsome pair of cans, V-MODA has done an amazing job designing these. Although they are a tad bit heavy, they will last you for at least 3 years. There's my 2 cents, I would recommend these to people looking for a pair of headphones used for traveling.