I think the power regulation is the best aspect, that and I think my Seasonic based PCP&C is starting to go (cap whine...)! Plus it would be nice to step up a notch with my new power supply, and I definitely think this would be a step up!
I really like the lime green color scheme that goes along with the modular construction. I have used modular PSU's since they started making them. Of course before then I was making my own modular PSU's.. That lime green though gives me flashbacks to the 70's and the 340TA. I know Steve knows what that is. Hint: AAR