It's pretty simple: Seasonic is at the top of my list of go-to PSUs... whether it's a Seasonic branded unit or a Seasonic platform from another brand name (cough... Corsair!) I only trust their quality. I've got Seasonic PSUs that are approaching double digits agewise and they just never quit.
seasonic evokes thoughts of hearing the soothing sound of the ocean, which is a much better image for a power supply than one that could be noisy and obnoxious.