Those who use Lansinoh milk freezer bags

miniray

I just bought 50 Lansinoh milk storage freezer bags.  I'm reading reviews online and they aren't the best.  A lot of people are saying the bags leak, not from the zipper part but from the actually bag itself, like from the bottom corners and such.  Apparently the bags are so thin that if you ding them while frozen you can split the seems and they will leak. 

Have you had issues with these bags?  I'm not sure if I should return them for something else or what...  TIA!