As much as I like the Kairos, I think I'm good with the old one I have. Funny thing is, the main reason I wouod want to get the reissue is because I want the newer box that doesn't use styrofoam. Helps prevent yellowing while stored in the box.
Now that I think about it, maybe I should get the reissue just for that. But not sure if I'll preorder or just wait until release date and get it at a discount like how the VF-19 is already discounted now.