I'm interested in buying some X300A speakers but am nowhere near a place to demo. I already have Kef R100 speakers running off an Arcam A38 Amp in my lounge and am very familiar with how these speakers sound and when buying them demoed the Q100, Q300 and LS50. So my question is are the X300A similar in construction and sound to any of these other Kef speakers I've already heard. The X300A would be in a good sized room being fed from my HP X2 laptop. Many thanks Stuart