New domain and site or Old Site for enhanced web directory?
I've an idea for an Irish web directory but I am not sure yet if I should use a category killer domain name for the site (does exactly what it says on the tin) or an existing site (12 years old) with web directory section. The existing site has PR but the new domain name is an exact match for the category. Which would be better to use from an SEO point of view? The new domain with a new site or the existing domain with the new domain name 301ed to the existing site?