The original silver Corsair sucked so bad they had to redesign them (although to be honest there are some people that really liked them). The newer Corsair is mixed a silver & gold colored reel. They do not compare at all to the Calcutta which is a fine reel.
Their website is
http://fish.shimano.com
My personal feeling is that the Abu 6500 size reels are better in the sub to low $100 range than the Shimano Corsair 300-400 range but the Calcutta 400 is better at 200 smackers. Still a fair amount of coin for a reel...