At one time I had a very small "collection' which consisted of an Omega Speedmaster (moon watch), a Rolex Explorer, Rolex Submariner, IWC Mark XV, IWC Pilot's Chrono and a Tag quartz. I planned on adding to my collection as time went by but instead I seemed to lose interest.
Today I only have the Submariner and the Tag. I love the IWC watches though, and will probably get another one some day.