Or can I mix them up abit? Ive purchased a Sony STR-DG710 amp from Beasty (top fella) and have been looking for some 5.1 speakers to go with it. Ive noticed that people seem to have floor standers at the front and book shelves for the rears. Is there any reason for this or is it possible to have floor standers front and rear if the space is there??? Also,......Im looking at Mission 33i floor standers (front and rear if possible) and mixing it with Q Acoustics 1000c sub and possible centre or should I get everything from the one range / brand? Cheers, Mike.