Both work really well and they’re easy to keep clean.
The small one has a cool inside design but it’s hard to keep any bag in its place. I have to stick some tape on the sides so it doesn’t come out. It’ll be good if the little one had a ting like the big one. 
I like that they both keep odors kinda sealed, only when I open them I smell something but I can walk by them and I don’t even notice them.