I play in a 4-piece rock band, and I am looking at the possibility of using a 4x8 cabinet instead of the 1x15 that I currently use. The main reason for this is that our PA has two powered subs plus two full range cabs. Put simply, I am looking for a cabinet that will cut through onstage and add more mid punch (and clarity) to the mix, as there is plenty of low end rumble!. I am not a fan of a lot of top in my sound - just good mid range punch. The onstage volume is around the 250-300w mark. I use an active 5 string. Is it worth considering 8's on their own or should I be thinking more along the line of 10's. I intend to keep my 15 as an option on larger gigs. Has anyone any ideas? Thanks.