Help with Speaker Choices

[Hawk71903]

I'm currently using the speakers from an old Panasonic Home theater in a box system. In addition, my setup includes a Sony 7.2 channel receiver(STRHD770), and a Klipsch 10 Reference Sub.

I would like to upgrade my speakers, however I'm limited on space, so towers and even bookshelf speakers would be to big. What are some of the best options for smaller satellite speakers? Might have a little more room for a larger center channel.