I have the 660W version of this PSU. I'm running mine in Normal mode, as I am a little uncertain about the reliability in Hybrid mode. The bad about running the PSU in Normal mode; is that it will allow more dust to be sucked into the PSU in very dusty environments, that is if you have it placed down pulling air from outside your case. This is why I mounted my PSU up to pull air from inside the case, which I know some don't recommend doing. I just feel warm air from inside the case will be less harmful to the PSU than being clogged up with dust in a few short months if mounted down. Less cleaning to do, too!
Also, these PSUs do come in very nice packaging. The cables are a little stiff to work with, but you can tell this is a high quality product. I'll stick with Seasonic for all my future builds!