What kind of riding will you be doing? Are you looking to replace or complement the Detail? Could you provide more details about riding style, skill level, shoe size, weight, height, etc?
I ride a Gnu B-street and love it - I feel like it's a very well-rounded board. It's on the softer side for a park board and is considered a jib stick, but it isn't a noodle by any means. I like the magnetraction and the banana camber. I ride a 141 and I can take it in the trees and powder no problem because of the reverse camber design. It does feel a little unstable in the chop, however.
I also ride a 143 Capita Space Metal Fantasy as my mess around, early/late season board. It is much softer, so it's more fun for butters and other ground tricks, but it doesn't perform nearly as well powder, on ice, or at high speeds.
As for riding a guy's board, you could do it, but why would you when there are so many great women's boards out there? In general, men's boards are going to be stiffer and wider (that's what she said). So if you have small feet, I would stay well away from men's boards in general.