I have had them from ziplocks with water to the plastic quart containers. I thought they were great when unfrozen and couldn't tell them from fresh. My wife , the food snob and made a career out of every Bush bean recipe you guys eat was impressed with both methods. Both frozen shrimp methods were over 6 months old too. Both frozen in fresh water.So I have struggled with freezing shrimp and getting the right texture after thawing and cooking. I used to pre-freeze them in the freezer and then vacuum pack them, but was never happy with the texture (seemed mushy after cooked). Does this method help with that?