Go with Wool
Here is an interesting article that states the recent trend in rugs is away from the ornate Oriental or Persian rugs and towards cleaner designs with more straight lines. Another way of saying this would be that “geometric” designs have become more popular while “curvilinear” or “floral” designs are falling out of favor.
This article also has some advice for picking out a rug at the bottom. Such as the blunt “Go with Wool.”