made the mistake of thinking that I could do with a new keyboard, and so reading stuff online about it. This is useless; everyone who talks about keyboards is a nutter about them. It's like trying to ask about new headphones for your bus trip on audiophile forums or something.
@sil what is wrong with your current keyb? What do you want to see improve with a new one? Size/weight/travel/sound/features? Maybe think on the requirements before trying to whittle down all keyboard options from top down?
@popey the problem is that I don't know. What's wrong with my current keyboard is that it's the one that came with the Acer Aspire One; it's my fallback, after my cheap logitech broke. It lives on my desk always so I don't worry about travel or size or weight, and I don't need features much, I don't think? But I mostly don't know enough about this to even know what I don't know. I have low requirements here, though!

@popey also sorry, I didn't actually answer the question!
This little keyboard is not great because:
it doesn't have a number pad (Blender uses this)
it turns on numlock on startup which you have to turn off otherwise half your letters are numpad numbers and your password doesn't work
it's *grubby* and I can't make it be clean
it's white, so it shows the dirt a lot

but it's functional; I've been using it for months. So, low ceiling here!

@sil @popey you can also get separate number pads (this probably widens your search, sorry)