I use a Cyclotest 6 from Superior Watch ( http://www.superiorwatch.com ), esp at the price of $315, and it does 6-watches out of the box (it's not "pretty" though, I keep mine in a cabinet).

Moreover, it can grow with high-density arms (4-per arm) for a total of 24-watches!

MapleLeaf: are you sure your other watch isn't an IWC Schaufhaussen (sp?)

:-) neil
1988 360TE AMG
1993 500E

From Superior Watch (an IWC authorized service center):

The Cyclotest 6, a wall-mounted machine, will keep up to six watches fully wound. It measures 10.5" wide and 4" high. Watches are rotated and revolved in all directions. Hardware is supplied with the machine for mounting it on a wall to enable simultaneous 360 degree rotations in every direction to wind all automatic watches. 110 volt AC only (not battery operated); includes electronic appliance-timer to custom program daily winding. This product is guaranteed by our company for one year and is highly recommended for serious watch collectors having more than two automatic watches. The Cyclotest 6 is $315 plus $10 shipping (within the continental US) and applicable sales tax for NY residents.