Which Revlon one-step?

[Peonyperfection]

I have fine dark hair, which one step is the best? Boots and Amazon seem to have different products and I can’t compare them very well. I think the ‘booster’ is targeted at me but is the the ‘Volumiser’ better?

I went for the multi which has both and extra attachments. What I like most about it is the heads are detachable so it’s much easier to pack if you’re away! If you don’t want that one, the booster looks to be better for shorter hair.