USA, Canada / Where can I get Zywiec near San Diego [25]

I can get it here in Colorado, but it tastes a little flat...I think there is distributor out east somewhere, but I've gone on line and it is possible to order it by the case load. When I got it in Canada, the Zywiec tasted fresher and was in .5 and one liter bottles. OCO seems to ship better, but we aren't able to get OKO Mocne (SP) here. I have seen Tyskie once..but it also tasted somewhat flat....