Collection confession time. What's your powerlevel? How do you sort large collections, if you have one?

Me, I have 6-10 years worth of /e/ folders/pics, and since I batch download I end up with some stuff I don't like.
I use Visipics to detect duplicates (though it doesn't work very well with very minor variations, like glasses on/off or mouth open/closed, also don't know how it deals with "browning" pics which I personally don't like.)

Just made a timed 5-second slideshow with Irfanview and put my second monitor to work. Pressing delete weeds out the pic. If I see something I don't like, I can just click to make it active and press delete. Pretty sweet.
I also have the monitor turned sideways, since most pics it seems are portrait, not landscape.
Also been thinking about setting up a personal database (Hydrus Network) anyone tried this yet? I hear it can hash the MD5 of pics and auto-tag by downloading tags from Danbooru and other users.

tl;dr: How big is your collection? Also, post smiles.