Me too, on the CRKs. I have one drawer queen, but the other 6 larges comprise 3 work users, 2 EDCs, and one light-carry EDC. I've been working to move on from knives I don't carry and use--Use It or Lose It--so for flippers I carry all my Shiros, 2 being work users, and 3 out 4 Hinderers are users. The Hinderers get less carry time as they don't suit my cutting needs as well, but I love their characteristic style and build quality. My ZTs honestly leave me a little cold. They're good knives that somehow seem a little soulless to me, if that makes any sense. There seems to be something of Chris in CRKs, Rick in his own-branded RHKs, and Sergey and Igor in Shiros, that's missing in ZTs, even those by noted designers.
I've got a few singles for flippers too--RJ Martin/TRM Machine Flipper, Olamic 247 Wayfarer, Cheburkov Scout, North Arm Skaha--and they all get carried and used as well.