I've been running a SS-860XP2 860 W fully modular 80+ Platinum PSU for 3 years. Currently, it's $190 ($170 after rebate). It's semi-passive (can optionally run fanless to 30%), and doesn't begin to spin the fan above idle until 50%.
Sorta refutes the claims on the Silent Snow line about Seasonic being noisy and poor value for money. Granted, I'm never maxing it, so I can't say how noisy it is under full load.
I also have a SS-460FL2 460 W fanless modular 80+ Platinum PSU, on an i3 system. Yeah, fanless. Current street price is $110.
Both have 7 year warranty. Why is warranty at the very bottom? I'd put it right below Modular, and above the fold.