I have no personal experiences with the Wadia, but I do for the Cary 306/200. The Cary is one great Redbook CD player. There are so many good qualities about the player. For one, its built very good and weighs like a receiver. It also has a metal (reliable) transport, eight Burr Brown 24bit/192khz DACs,numerous digital and analog inputs and outputs. It can be used as a dedicated transport or a dedicated DAC. However,matching the Cary is very important, with the right components and cabling, this player can have a great balance of accuracy/analyticalness and warmth/musicality. It can sound very impressive, one of the best redbook CD players around. The used prices that it's selling at is a bargain for the sound quality and features it provides. The limitations would be more on the medium than the player.
Good luck
