I was able to buy a clearance referb S15 from Vanns.com as detailed in this thread.
http://www.audiocircle.com/index.php?topic=94624.0for $239. The unit arrived in June but, its a looooong story, was not able to hook it up until 2 weeks ago. When I finally took it out of the box I noticed one of corners of the rear was bent. The 7 day return privilege on refubs had long since expired so I thought I was screwed. With nothing to lose I plugged the unit in and it ran through its initialization sequence and booted up without a hitch. Thinking I was home free I plugged a Bryston BDA-1, Toshiba SD6980 Universal Disc player, and Sharp 46" LCD TV in. The BDA-1 is hooked up using a Mojo Audio PC. The Mojo bettered the stock cord as well as a Shunyata Venom. The Wyred4Sound SX-500 monoblocks are plugged directly in the wall ( a new dedicated 20 amp line with cryoed 10 ga. romex into a quad box) using W4S PCs. The sub is a AV123 Rocket Hot Rod using a Shunyata Venom PC direct into the quad.
For a day and a half the system sounded better than it ever has, the S15 bettering a Belkin PurePower PF60. A layer of digital glare had been removed revealing more detail and less stridency. Suddenly the unit switched off. The unit would keep running through the boot up then switching off. A call to APC tech support had me doing a hard reset that proved to be fruitless. I had since deleted my original invoice, so a call to Vanns had an email copy of it sent to APCs customer service. I was issued a RMA and received a shipping notice replacement unit on its way.
The replacement is working flawlessly but when I took the bad S15 out and put the PF60 back in, I notice the LCD looked better. So now I have the PF60 into the quad and the S15 into the PF60. I called back tech support about returning the bad unit and I was told to KEEP THE OLD BATTERY. This reduced the weight by 22lbs and now I have a spare battery. The cost to return VIA FedEx was $53.
I cannot praise APC highly enough! This is truly a best case scenario to what could have been a very ugly situation.