Cheap and cheerful, but do crack easily
I have only ever gotten these via the ZooPlus loyalty points scheme. They are great for free but they do split quickly.
However even when they are split (the breaks are only slight usually) they are still functional, last a decent amount of time, and do the job they are meant to.
I like that they are colourful as it means it is easy to pick out the cat food first thing in the morning when the kettle is still boiling and one's brain hasn't quite woken up yet!
They are also easy to clean.
You get what you pay for with these. They are cheap and cheerful.