If you are looking for a pair of compact, high quality headphones then you cannot go wrong with the OMX 50 VC headphones by Sennheiser. Being an avid runner a good pair of headphones is important to me on my 6:30am runs - something that will produce a high quality output whilst fitting comfortably in my ears. The robust, over-ear loop style of these headphones is perfect as they stay in place for the duration of my run which makes a change as my old earphones were always slipping out - while this was not a huge inconvenience it was very irritating nonetheless! They also come with an ear adapter set, which is basically a set of small, medium and large ear buds which enable you to pick a size which best fits your inner ear.
The key feature that I really love about these headphones is the sound quality. I tend to listen to a lot of bass-heavy music when training and these headphones provide a full and clear sound. The sound quality, coupled with the adjustable volume control, allows me to really turn up the volume when I need motivation the most and also eliminates the need for me to reach into my inside pocket to fiddle with the volume on my iPod while I'm trying to stay focussed.
Overall I think that these are great headphones; for £25 you get a sharp punchy sound, stylish design and accessories to improve comfort and functionality. And from my past experience with Sennheiser products I am sure that they are durable enough to get me through the English winter and well beyond!