Denon AH-C751 Headphones
I was considering buying the Denon AH-C551s but saw the 751s on iheadphones (www.iheadphones.co.uk) for £79.99 (list price £149). I cannot find anyone else who can come close to this price.
I have bought them and I am extremely pleased with them. I used to think my Sennheiser CX300s were brilliant - for the price they are - but the 751s are a huge improvement.
Delivery is free and they arrived the next day.
If you are in the market for some excellent headphones for your iPod/mp3 player you should seriously consider them.