Avoid. Whoever thought it would be a good idea to have a little gap at the back (It's meant to be a handhold, but its just bad design) where your cat can endlessly stick their paws in and just tip the whole thing over, because that's what mine loves doing! Not to mention it leaks if you even try to fill up the big plastic cup to anything more than the bare minimum level.
I found that dispenser is light and my cat was moving it and spilling the water constantly, so after couple of days, I stopped using it and switched back to the plain bowl
I bought the 3L cup for my rabbits! It's really good especially in the summer when they drink a lot more. It's annoying because it's not completely full and it's harder to fill it because of its big size. Very good! The problem I have is just with refilling water.
We have the 3L and our two cats really like to drink from this dispenser. It gives stability to the base once the tank is full, which I imagine will also work for food. It is a bit cumbersome to turn round because it weighs a lot and if it is not done carefully, you end up with all the water falling out.
I really like this dispenser, for two main reasons: the non-slip bottom ensures my cats don't tip it over and the transparent container means you can see when the water is about to run out.
This water dispenser is great. It is filled from below. Should be kept clean from the inside (limescale deposits). If you understand how the dispenser works (pure physics), you know not to tip it over! The water runs out to the front if there is no water in the shell. So turn it round ;)
I bought the small size of 1.5L for my 15kg dog and it is perfect. At first it seemed too small but it has the perfect capacity for my dog, neither too much nor too little.