You would do well to check out the HK Audio LUCAS range. Fantastic quality in a compact package.
Latest addition to the range is the NANO, which comes with a little sub with built in amps and 3 channel mixer unit, plus 2 tiny satellites which can be mounted on stands, or atop the sub on a table.
Check out www.hkaudio.co.uk or check out my eBay listing www.ebay.co.uk

They sound great and are ample for most club gigs.

Graham