I use Tupperware freezer mates because it's reusable which makes it environmentally friendly, it's modular which maximizes use of freezer space, and it's free after the initial purchase. There is also the lifetime guarantee so it is replaced for free for a lifetime if you break it and - very important - you must save all the broken pieces plus the other parts that go with it (inserts, seals, etc, even if they are not broken), to get a replacement for free.
I also use ziplocs for certain things; I just press the air out as I seal the individual bags, for example family size packs of chicken bought on sale, then individual chicken breasts or drumsticks or etc one per ea storage or sandwich bag; then I put the bags inside a large freezer bag.
I do not ever experience freezer burn.
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