I guess Razeus won, dang it
!
I've always been a fan of Aperture's philosophy of workflow and I don't care for LR's UI or it's own concepts of workflow. I'll probably use Aperture for as long as possible. I'm not interested in Photos, per se, though it will be interesting to see what they have under the hood. What I'm interested in more is what can be added on to the application given the hooks Yosemite is exposing API-wise against the RAW engine and what will happen on that front. Maybe some good stuff on the plugin/extension front.
I own LR, so if absolutely necessary, I'd start doing my project work there, but I also own C1 and DXO Optics Pro but they don't work with my Nik plugins. Ugh. I'll wait and evaluate.