Regardless of where you get them from, make sure you can audition them in your room with your equipment. It varies from speaker to speaker but room interactions can drastically change the "sound" on most speakers. Internet dealers generally give you 30 days so plan accordingly. Most respectable brick-and-mortars will also give you a return period but you generally have to pay-up-front unless you have a well-established relationship with the dealer.
Oh and another vote for the Paradigms. Now that our family room is done, (The carpet is going in as I type this) I will be buying the Studio Ref 100's, Studio Ref 20's and the CC-690 Center.