It all is really a matter of preference and music style. What kind of music do you listen to? Do you need bass response or higher output quality for mids and highs?
A lot of speaker manufacturers are starting to really get cheap with their designs, I'd have to say that Polk and Infinity are the only 2 companies left that really put out decent speakers....subs are a different story. Companies like Kicker, Rockford Fosgate, etc... are all really just mediocre now, and you're paying mostly for the company name branding it.