Seasonic PRIME Ultra 850W (SSR-850TR) and 650W (SSR-650TR) 80+ Titanium Power Supply units are on sale at Newegg. Ends 11/20.
The "TR" revision is, from what I gather, a tiny bit improved version of the "TD" which was rated 10 of 10 by JonnyGuru. Reviewer call it "Mythical". I picked the 850W myself.
SSR-850TR: $210 - $15 rebate = $195
SSR-650TR: $160 - $15 rebate = $145
Don't pay for shipping by signing up for a free Shoprunner account, courtesy of your World Master Card or Amex.
Amazon hast the SSR-650TD for $150 [amazon.com]
, and the SSR-850TD for $235 [amazon.com]