My system!

Do you have any opinion that i can get the best out of this system?
I am thinking about replace Kef XQ5 to PMC OB1?  What do you think?

This is my system:
Preamp: Anthem AVM20
Amp: Anthem Statement A5
Speaker Cable: Signal Cable Silver Resoultion
Internect Connect: CD to Preamp--Transparent Music link 100
                            Preamp to Amp--Signal Cable Silver Resolution Interconnect
                            DVD to Preamp--Transparent Preimum Digital Cable
Source: CD players: Cambridge Audio 640 version 2
            Denon DVD 2910
Speaker: Front Kef XQ5
              Center Kef XQ2c
              Rear: Kef Q5

有冇相呢, 影來看看