Darren asked: “I’d like to get a decent tablet that works well with Wi-Fi, particularly when I’m out and about.”
Darren, any tablet will have WiFi, it’s a “base model” feature on absolutely all tablets, even e-readers have it these days, and all can be expected to get decent reception and work as you would expect from a WiFi device.
If the main thing you’re looking for is internet on the go, you may be better served by looking for an LTE-enabled tablet. Again, just about any tablet will offer a model with mobile internet built in, though it probably won’t be the base model.
There are some drawbacks, the tablet itself will cost a little more and you will be stuck with some kind of monthly data plan, but if you mostly plan to use it while you’re out and about, it may be a good option anyway.
You can also just get any WiFi tablet and share your phone’s connection, most plans these days offer some kind of tethering.
As for the tablet itself, if you plan to use it on the go, you may be better served by a smaller, lighter one. 7” and 8” models are popular, with the obvious downside being that they’re not that much larger than a smartphone, and the upside being that they’re light, easy to pack anywhere, and they do have a larger screen even if it’s not that much larger.
In terms of brand or operating system, for your requirements that’s all about preference. Every tablet you look at will have WiFi, so if you already use an iPhone maybe look at an iPad, it will work together with your iPhone very nicely and you’ll be able to use some of the apps and features you’re already used to. If you’re on Android, maybe look at some Android options instead, but really it’s all up to you, your requirements will be met by any brand you look at.