I have 1 and two halves. I have a Paterson/Philips PCS 2500 for sizes up to 6x7 and a Graflarger cold light back for my Linhof for 4x5", which I use on a Bogen copystand that was originally for a 22A Special enlarger (I thought I would buy a "real" copystand at one time, and then realized that Bogen sells precisely the same piece of equipment as an enlarger base/column/carriage unit and a copystand). I just sold my old 22A head to someone who wanted it for the negative carriers and parts.
No room in my Manhattan apartment for more than that!
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Update, January 2006--Well since my original post I found an Omega D-II that fits in my dark/bathroom and sold the Philips enlarger. I still keep the Graflarger for some future use, maybe if I'm spending a summer or semester away from home.
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Update, April 2012--Holding steady with the Omega D-II. Graflarger still pretty much lives in the closet.
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Update, April 2018–Honolulu darkbathroom, D-II still working. Graflarger back in storage. 22A Special chassis doing more or less permanent service a copy stand with a Linhof macro rail for fine focus and two Norman portable strobe heads and octaboxes for opaque media or a lightpad for transparent media. The strobes run off a Norman 202 200 W-s pack that stays plugged in all the time.