I only don't really like two of them...
this and
this.
The black and white one is much too dark and doesn't seem to have much... point, I suppose.
The other one I think is just too simple, in my opinion.
The other ones are all really good, though. I like them a lot.
The second one, with the panda, is easily my favourite.
A general comment I'd make is to work on lighting. Some of them are a little too dark.