If you’re in the market for a new PSU, and the warranty is figuring heavily into your decision making process, then you might want to reconsider the Cooler Master Real Power and Real Power M series.
“As part of our total commitment to quality, Cooler Master is pleased to announce that we will be extending the warranty period of our Real Power and Real Power M series power supply units to a period of five years. With this newly extended warranty, Cooler Master users can purchase Real Power and Real Power M PSUs with even greater confidence.”
It's nice to see hardware manufacturers displaying their faith in their own products by increasing their warranties.
Regardless of which PSU you choose, do remember that they are absolutely critical to the reliable operation of a PC. This is possibly the worst component to skimp on.