I too, have only had one set at a time. So my keeper is my 73-74 B/O badge butcher block set.

22, 12, 13, 16. Bought for me by my dad in high school. They have been everywhere with me along the way. Still play them today. Getting ready to retire soon and want to get another set (maybe) but these are my forever.

That's an easy one for me to choose between keeper sets. Let's put aside my dislike for 1950s and beyond Ludwig drums. The Blue Oyster 60s Ludwig drums would be much easier to replace than the 40's WMP WFL drums.