I never tried Dreamer, but I smelled it on my colleague before.
IMHO, Im not sure which one is the best for you but if you're looking for something dark, mysterious, a bit different scent, I guess Zino is the best choice compared to Dreamer. Not because of I had wear Zino before (I have it in my collection) but I think the smell of Zino is not the one that you can find easily in other mainstream cologne or fragrances. And as far as I know. not all guy can really wear this.
Dreamer for me, smells too common (for a girl who's nose got tortured by many scents). But I admit, it's nice and slightly romantic to me (at first I wonder why my colleague wear that to office).
But hey, different people have different opinion and body chemistry. Perhaps you should try them first see how's the result. Another thing about Zino, the longevity is not really good (on my skin).