They look like they both work; the more expensive one gives you the option to stand it up or hang it while the cheaper one is flimsy and won't stand.
Personally I prefer the old-style closed enema bags because I'm so clumsy I know I'd spill coffee out of the open kind.
FWIW -- the Gerson people in the US don't recommend the SA Wilson coffee for enemas. They tried it and said it "didn't do the job." I have no idea what that means or if they're correct or not. But they use light-roast organic coffee that could be used to make coffee to drink.
Like I said, I don't know if they're right or not, but Max Gerson used normally-roasted coffee, so that's what I use too.