Pros:
Good sound quality
Comfortable
Price
Long, durable cable
Lightweight and small

Cons:
Somewhat unimpressive bass
Not a tight fit on your head (fall off easily)
Poor durability if used at high volumes (I've had these headphones since about half way through June this year [2009] and the headphones [internally] are beginning to wear out already [16th July 2009], I can hear a rattling noise in the right headphone if I shake them).

If I was given the choice between these and the Sony MDR-XD200's It'd be a tough choice but I think I'd pick the Sony's due to the better sound quality.

These are budget priced and show it plastic feel ear pads are too shallow. Wear them for more than 30mins and you will be desperate to take them off.
Ok for kids as they are quite strong.
Otherwise if you want sennheiser just pay up.
Other brands are far better in this price range sony and phillips.

Just exactly what I was looking for. Good decent sound, not overly bassy. Sound is crisp and clear. Sounds amazing watching movies. Didn't hurt my ears after watching Transformers, and didn't have the feeling that they were crushing your head. I was going to get a pair of Skullcandys, but after reading some reviews I decided to get these, and I am so glad I did. I bought these on blind faith and I am totally impressed, If this it what these ones sound like imagine what Sennheisers other, more expensive ones sound like?

Covers your ears completely and blocks out external sound fairly well.

Very light and comfortable.

Just buy them before they go up in price, at £14.99 whats the worst that could happen?!