Summary: Just over two years ago I bought a pair of PNY 8800GTX (http://www.amazon.com/gp/product/B000K2B3E0/ref=ox_ya_oh_product) to run in SLI. A month ago one failed and a helpful if slow PNY tech service RMA'd them with a pair of 260GTX--since the 8800GTX are no longer in production. One of the two replacements was dead on arrival, and I am now RMA'ing it. The other 260GTX has worked very well, though not as good as the 8800GTX's running in SLI.
Summary: This is an awesome video card, that has tons of features and overclocks well with no hassle. The only issue is that the card is a bit long. For my friend's case it got in the way of the hard drive brackets, but that was easily remedied by relocating the hard drives.
Summary: Handles every game and every application I need it to faster than my previous 6800GT's in SLI mode. Noticeable lag when handling certain java applications which is annoying, but that is it's only flaw so far (been using this product for over a year now).