I have been looking to maybe get a used 950 and the last three that I have seen on ebay have gone for over $600. At this price it would seem that the 990 becomes an even better value as you compare the ugrades that it has to offer and the fact it can be had new for $350 to $400 more than the 950's used selling price. The only thing that I have against the 990 at this point is its height. I dont believe I can get it in my existing rack.