I asked a similar question and got this reply from Clare Newsome :
Re: Kef 3005SE vs B&W MT 30 - which is best?
We
gave both Awards last year, and stressed we thought the B&W MT-30
package was worth its £575 premium over the KEF KHT3005SE set-up.
Interestingly,
the KEF beats the B&W MT-20 package that uses the same satellite
speakers as the MT-30 package: it's the MT-30's use of the superlative
PV1 subwoofer (an Award winner in its own right) that makes the key
difference.
So, in short - yes, the KEF is excellent (we
wouldn't have given it Product of the Year otherwise!), but if you want
a home cinema experience with even more punch, agility and pace, the
MT-30 is a superb next-step-up solution.
Clare Newsome is Editor-in-Chief of What Hi-fi? Sound and Vision Hopefully that helps? Cheers