I used to only collect slipjoints, and proudly eschewed "tactical" knives as coarse and undignified. Then I won a Mini-Skirmish in a drawing. Since then I've bought more "tactical" folding knives than I care to count.
I've sold several to finance and make room for others. However, there's something about that Mini Skirmish, maybe because it was the first -- I think it's still my favorite, and I'll never sell it.
Nice little EDC rotation you have there!