OCC has recently posted their review of the 850w unit from Sentey, known as the "Golden Steel"; the official model number is GSP850-SM. As the name implies, it is indeed stamped as an 80plus Gold efficient power supply. Sentey is not a name that comes to mind when thinking of power supplies, they're more well known for the PC cases they've put on the market in recent months. Anyway, the unit is modular (except for the MB/CPU/EPS power cables, and a set of cables for a video card), it has a nice black finish, and performed pretty freekin' well in the tests over at OCC. Here's the link:
http://www.overclockersclub.com/reviews/sentey_gs850w/