I have the malibu xfactor. It is a fantastic platform. Plenty of room for stuff like my 7 year old son. It's very stable and I could stand comfortably on it. It's just when you are paddling you're not 'hands on" fishing/drinking.
The outback is smaller (way less stuff to stow) it is just as stable but i think faster. Peddling vs paddling = more power in legs than arms and hands free is a huge plus for fishing/drinking (i think you can cover (fish/drink) more ground peddling).
good luck .