Prelude I sounds delicate and well built on counterpoint. Beautiful.
Prelude II sounds modern and neo-romantic (to me). Nice ostinato rhythym in the first part, and repeat.
Prelude III is my favorite (so far, I am listening to them now). Introspective and a bit of Satie influence?
Prelude IV seems to go back to Bach inventions (first part). This is as if you were modernizing the styles.
Prelude V nice ideas here, it's very pleasant.
Prelude VI again I hear different influences that, finally, combine in your own style.
Prelude VII sounds more contemporary.
As a whole, I think your writing is careful and inspired. I love taking counterpoint, baroque, etc..., and bring them to more modern sounds.