Has anyone heard the Tannoy XT8Fs?

Hard to find info on these speakers, but they look like they are capable of delivering that "Live" edge of your seat kind of sound I am looking for.  Great imaging, powerful low end, forward mid range and transparent top end.  Even the XT6F may suffice, but I think I am after a larger speaker with a little more force.  Wharfedale Reva 4s are not delivering for me in any of these areas, especially in the mid low end.

Thoughts?