Tray is easier for sticking in a rack. James, if it is going to be top loading does that mean no (tray) motor mechanism like the Rega Planet and similar players? As long as one can probably does not take up too much height for racks, that may be better as one does not need to worry about motor parts breaking and may be able to fit CD mats or clamps more easily, not to mention it could make it easier to clean the lens.