So what's relatively decent to get? Small is beautiful when it comes to this one apparently

It looks like most of them are the detachable tablet type ones.

There's also the eBay option. I'm that far out of touch that I've no idea what counts as decent these days

Chromebook maybe? Depends on the "use case" (bleurgh for some reason I hate that term). But yeah, netbooks aren't very in, they seem to have been a bit of a flash in the pan. Everyone wants either a laptop or a tablet or maybe one of the combo gadgets.

Yeah. Not Claire. Claire wants a netbook.

A few years ago we bought a netbook with an atom processor.  That thing was so indescribably slow, we eventually tossed it (and my wife is very frugal).

If you have not purchased one yet, I would make sure to get at least as much processing power as a decent cell phone, keeping in mind that they have the equivalent of an SSD.
 

Based on my experience (and needs), I'd prefer a tablet with a separate usb keyboard, mouse, usb hub and OTG connector. The tablet alone covers 99% of my needs away from a desktop pc, except when I'm on vacation when I need a BYOD with a keyboard and mouse (it's actually a cut-down keyboard, such as you might see on a netbook). Advantages: cost (kb, m, otg & a very small powered hub cost me ~$5 each bought separately), portability (tablet only). Disadvantages: portability (though the whole ensemble may weigh less than a laptop/netbook, it's kind of a handful to juggle, can't really use it on your lap, needs power outlet as the kb+m are a ferocious battery drain). You can buy tablet cases with kb bundled, making the package a bit more convenient (and a lot more expensive). I don't know if I'd go for >7-8" tablet, depends on use case I guess. My nexus 7 classic is slow  :-@ but still usable  :-S .