don't buy either. go to Doc's Cellar on Capitolio in SLO and buy real homebrew equipment and you will get superior results. their starter kits are reasonable and a great start. if you buy something like a Mr. Beer you will end up unsatisfied after a couple of attempts and buying the real stuff from Doc's anyway.
Or you can visit Central Coast Brewing on Montery in SLO and brew your own on their equipment.