With only 5 keyboards I'm probably at my all time low since I started with keyboards but those are the ones I really like.
I also sold quite a lot of more or less rare keyboards because life happened. (G80-5000, G80-2100, ...)
Lessons learned over the past 2(?) years:
- 60% is just not for me. Sold those.
- I won't change to ANSI so I have to accept that I'll be missing out on some stuff.
- Topre is nice (had HHKB2, RF87, RF88) but I didn't fall in love and there's not a lot of room for customisation.
- If I don't like a keyboard for typing, I'll probably get rid of it quite fast. I'm not a person who collects just for the sake of it.
Collection
1 Filco Majestouch 2
Used and abused but still my favorite keyboard and daily driver.
Vintage Blacks with 65g springs, white stickers, G81 cable, filled with shelf liner.

2 GON Nerd TKL
Pretty recent addition. Pretty much the only way to get a korean custom with ISO layout so I saved up for that one.
Ergo clears, Pexon cable.

3 IBM SSK
Got that from Seebart. Will either convert it to ISO or try to find somebody who's willing to trade.

4 IBM XT(?)
My first step into the "non-Model M" IBM world. The springs feel really light and it sounds amazing.

5 Cherry G80-0510
This one and the XT above: Brothers from different mothers

Couldn't find the time to add a wiki page yet but that will happen soon.
Also, retrobright.

Not pictured: Model M, G80-3700, ISO Dolch keybord, scarface keys and other stuff I can't remember right now.
Probably not that impressive but I'm quite happy with the diversity even after downsizing.