Do you use plastic or glass food storage containers? I used to use Tupperware plastic containers, but over the years they have gotten lost or the lids got damaged. I know 100% guarantee and all that, but at the time I couldn't bother with all that. I was excited to find Rubbermaid made containers called Premier that were very much like the Tupperware ones, so I bought a whole set of them. Then I heard that reheating food in plastic containers is not good for you health wise. Should I stop using them? We put leftovers in them and freeze them for my husband to take to his job when he works nights and he reheats them in the microwave. I am now looking into glass containers, but I don't know if they will last long with him transporting them back and forth to work. Does anybody use glass and what brand is durable? Thanks!