New owner here too, I'm getting one these bad boys for it:
Maxpedition Aggressor Tactical Attache I have bought various Maxpedition manbags and backpacks in he past and they are of exceptionally good quality, if you don't mind the slightly "tactical" look and are willing to spoil your new laptop with a good bag I recommend this. Mine's shipping from the U.S to Cape Town so it will take a few weeks, I'll be sure to post some pics of the G74SX with it when I have it.