Tyskie is on the shelf next to Zywiec at my liquor store. I think Tyskie is pretty good as well but Zywiec comes in 4 packs of 500ml cans so I buy that because it's easier to play back pack tetris with groceries and a solid block of cans than with a bunch of loose bottles.

They have Lech but I have never bought it. The name turns me off for some reason.