I have a core group of maybe 15 CCs, and maybe 4 or 5 NCs, that I keep around. Those I stock by the box. In some cases, a fair number of boxes. Then there are a few that I may buy a box, smoke them, and then let time pass before buying another box.
I still enjoy smoking singles of everything and anything for the variety, but it's rare anymore I find something that blows my mind and gets added to the regular rotation.
So yeah, at this point in the game I'm pretty comfortable that I know what I like and it doesn't bother me to keep returning to them. I may be in a rut, but it's a comfortable rut.