I'm not sure what exactly more emotion means, but those Wharfdales do appear to a have a dip in the midrange that might reduce vocal clarity and presence. particularly if you have them on a desktop and are getting a lot of 'floor bounce' off of the surface. The Sierra speakers you mention do not appear to have this same voicing and would likely provide better vocal presence in your scenario even vs the Wharfdales with EQ. that said, as a general question, have you attempted to EQ your current speakers and see if they sound better to you?