This unit is famous for being one of the units that I would bring to a deserted island, first hurt my back on, and drove 150 miles out of the way on a vacation to pickup.
The reason is that its a great unit. It take four large batteries for serious runtime, it has a XL port that can connect to the Super BigMomma battery pack, and has a couple 120volt outputs for non high voltage loads.
While we havent sold that many recently, its still a very good unit and $429 its a best buy
So buy one today, and relive 2003 with a SARS mask, your first Itunes purchase and with no fear of another East coast blackout