I've sadly only had cheap power supplies in my computers and I think they caused me a host of problems over the years. I would love a chance at a well respected Seasonic power supply to see how the other half lives.
I can't make up my mind between performance, reliability, uniqueness of some of their power supplies, or how quiet most of them run. They're also very affordable based on all the factors mentioned above.
Honestly there are only a few PSU brands that I will purchase above any other if at all possible, and Seasonic is at the top of that list. And the only reasons the other brands are there is because they use Seasonic platforms. Seasonic is one of the last quality PSU manufacturers out there that seem to care about build a solid and lasting product.
I have used Seasonic power supplies for years now. I currently have one that is getting pretty old and I am in need of a new one soon. (White would go very well with my black case) This would be awesome to actually win one. I value Seasonic because of their dependability and reliability. Luckily I have not had one fail me yet.