Seeking mechanically QUIET CD player

For an office system, I'm trying to find a good-sounding CD player with a quiet transport mechanism. The player will sit only a couple of feet away, so I don't want to be distracted by an audible whirring sound, such as I can hear from my old Marantz player. Looking to spend about 500 max. Current options under consideration include used Rega Planet 2000, used Cambridge Audio 640C, and (though this busts the budget) used Musical Fidelity X-RAYv3. Your suggestions appreciated. Thanks.