All in one cookers vs standalone?

goldfinches

I have the Morphy Richards Sear and Stew slow cooker which has a metal pot with a non-stick coating which I chose because the pot heats up very quickly and you can put it on the hob. I'm not too worried about the non-stick coating because I don't think whatever's in the slow cooker ever gets anywhere near the temperature where the coating starts to break down which is above 260°C/500°F so unless you chip it or scrape really hard I think you're okay there. 
I have been thinking about buying one of these multi-cookers myself partly because the pressure cook function would be very useful so I've been looking at this guide from Good Housekeeping 13 best multi-cookers 2025 UK.
I've also wondered about getting this sort of design GreenPan Non-Stick Slow Cooker 6L Stainless Steel CC005308-001 | Harts of Stur which says it has a much less nasty non-stick surface.

There's a lot to consider so I think you're right to ask for others experience although it's very difficult to know whether another household is at all comparable to your own. For what it's worth I live alone and use my slow cooker to batch cook two or three times a week during the winter and would never be without one now. I'm only thinking about upgrading because I'd like a pressure cooker but, like you, I don't want another separate piece of bulky kit.

PS have you considered swapping your rice for couscous. I weigh mine out into a bowl with a lid, pour over 1.5 times that weight of freshly boiled water from the kettle, then put the lid on and leave the bowl to stand for 5 minutes. Then, open the lid and use a fork to fluff the grains and that's it, far less effort than rice and just as nice to eat.