I already had one from two years ago, but I want to get another one to crossfire with the current one, since I dont think the 6 series is even a good upgrade from my 5970 yet. I noticed that there are no stock anywhere. Is this card discontinued a long time ago?
But as a owner of Quadfire 5970's don't do it, if you want to go that route buy a 5870 and go trifire far less issues and does not suffer regular negative scaling problems that plague quadfire setups
Yes I would advise waiting for the new series to be out a few months. This gives different companies a chance to offer reference and non reference versions (OC and advanced cooling options). I know many people enjoy and use multi gpu solutions. For myself I have always found a version of a single gpu that would run my games at the resolutions I required. I suggest you look at the best single gpu card you can afford and that your system will support.