I recently managed to negotiate with the girlfriend the approval to get some nice but big front speakers (KEF Q5s) but at the expense of having to compromise on the surrounds, where the priority was to look cute and unobtrusive (not that the Q5s don't look nice to me!). I auditioned the Q5s with some KEF "Eggs" and some B&W VM1s. The girlfriend preferred the appearance of the Eggs but I preferred the volume of the VM1s - the eggs seemed quieter. The dealer advised that I should stick to the same make for tonal matching and sensitivity (and hence recommended the Eggs). He said that output levels of different sensitivity speakers do not linearly match at different drive levels??? He did not give me the opportunity to adjust his amp levels to compensate for any sensitivity difference, so I feel that I did not get the chance to do a decent comparison/verification. I have since discovered (from KEF and B&W websites) that the Q5s have the same sensitivity as the VM1s and the Eggs are LESS sensitive than the Q5s! So, should I (re-negotiate and) choose the VM1s over the Eggs because of this reason or should I obey the "stick to same manufacturer" rule and adjust the amp levels to match them (and hope that the output vs drive linearly matches)? I don't see how his advice has any bearing, since the cabinets/drive units are different, so how can/why should they match tonally - they don't match sensitivity-wise? Thanks for any advice.