Has anyone used a solar shower with a foot pump?

I am looking to upgrade my simple solar shower to one with a foot pump. This would allow me to use it without having to find a branch that is able to hold up 5 pounds, something I have found can be a bit difficult in some places.

But before I pick up one of these and spend close to $100 I was wondering if anyone had any feedback on specifics, brands or things they loved/hated about ones they have used.