We've used an Ubbi one for 5 years (so far!) as we've got two kids. As soon as one was out of nappies, the other arrived 😆 It's good because it traps smells but doesn't use special bags or chemicals. It just uses a really good seal. I recommend it for anyone in a flat or without easy access to an outside bin. Otherwise they're not essential but a nice-to-have in my opinion.
Angelcare. I use their liners and buy multipacks from amazon
Vital Baby bin with normal supermarket liners! X