Sansun Arctic 450W PSU
 

The chinese manufacturer Sansun isn't too well known yet, because they are a rather new company. If they continue delivering such solid products, I'm sure that this will change in no time.
For a price for which you often get only a plain and unsleeved power supply, Sansun is giving you dual 12V rails and a modularity feature which is usually found only on much more expensive PSUs. All cables are sleeved as well which helps keep your case look clean. Also the important qualities of a PSU like voltage stability and fan noise look good.