Tannoy TFX 5.1
My (or rather my wife's) criteria are that the speakers must be small and be under £300. I'd also like them to have a 5* rating from What Hifi, but the Tannoy's haven't been reviewed.
It's either these or the Boston Acoustics Soundware XS 5.1 SE. The only thing holding me back with them is the user reviews stating the audible off click of the woofer. That would have the potential to annoy me.