I have a 3 unit rack flight case into which my GK MB Fusion is mounted, and in it goes 2 x OBBM speaker leads, tuner, microphone, guitar stand, a couple of cables. Main cable goes in the bass case. Its very efficient, the only extra thing I have to carry (apart from speakers) is a bag containing mic stand, mic leads and power 4-ways.
However I often think I'm missing the main benefit of a lightweight head and will probably get a laptop bag at some stage, or backpack designed for laptop like [url="http://www.argos.co.uk/static/Product/partNumber/012593.htm?CMPID=GS001&_$ja=cgid:8710495862|tsid:41408|cid:177977222|lid:61104563822|nw:g|crid:32474759462|rnd:1095358869250117264|dvc:c|adp:1o7"]this[/url].