Hi all. I am about to embark upon creating a new Hifi system for my living room, roughly 12ft x 12ft. At first I intend to just use a pair of floor standers as a stereo set up, and in a few months time I will use the floor standers as my left and right front channels in a 5.1 system. The speakers will mostly be used for music, a lot of which will be house/dance and electronic stuff. Baring all of this in mind, please could you recommend which speakers from the list below I should go for? All will be bought second hand which makes auditioning of them difficult. - KEF Q500 (roughly £400 second hand), these are meant to sound great but I'm worried i'll be left disappointed by the bass considering the music I listen to. - KEF iQ7 (Approx. £300 second hand), how would these compare? Would the bass be adequate without a sub-woofer for bass-heavy music? - KEF iQ5 (Roughly £200 used) A cheaper alternative. How would these sound in my system? - KEF Reference 104/2. My friend has offered me his pair for £400. I have heard them and they sound great, lovely powerful bass which is what I'm looking for, however for that money I was wondering whether a newer pair like the ones listed above would sound better. Many thanks.