Studio 20's or Proac?

Looking for a small monitor for a second system. Price wise the Paradigm Studio 20 and some of the smaller Proacs are about right.
Which is better. Like all kinds of music, Rock to Rap.
Can't speak for the Proacs haven't heard them. I know that A LOT of people like them. Personally I own the studio 20 v3. I love them. They are not perfect by any means, but in my system for the price, and with my equipment, they sound fantastic.