If this has been posted before I apologize. I just read this article put out by the Endocrine Society on just how bad plastics (even BPA free) plastics are. I had an idea plastic was garbage, but did not know it was so extensive.
For transporting: Glass and foil for food, stainless steel for coffee and tea. Haven't looked into the aluminum factor yet though... And my glass containers have plastic lids, which I dislike, but haven't found better options yet.
For storing: Re-used glass jars from coconut oil, almond butter, etc. in addition to the above items.
Sometimes I think I have a glass hoarding problem, and then I remember that it's not a problem :)
I'm transitioning from plastic to glass. I'm doing it in stages as the glass isn't dirt cheap. I seem to be very sensitive to the environment in general, so I assume if anyone would have trouble because of plastics it would be me!
I use glass mason jars a lot for food storage in and out of the house, and always keep my eye out for stainless steel containers that have plastic lids(the plastic lid wouldn't touch the food)...these are expensive though, so when I say keeping an eye out, I mean at yard sales, Goodwill and the like...you can also invest in a tiffin like they use in India for lunches, and I have a few stainless steel thermoses to send my kids to school with warm soup or stew for their lunches.
Mason jars, although I will throw lunch salad fixings into a big tupperware now and then. But glass is clunky - so I put reusable fabric snack bags on my Christmas list - there are a zillion versions on Etsy. Down with the ziploc! I'm also coveting this silicon liter bag- http://amzn.com/B0049EU670 I found it mentioned on Nom Nom Paleo.
I'd love to know what people do for freezing meat.
I purchased glass mason jars in 1/2 pint (jelly), pint, and quart size, for carrying liquids and broths; and also picked up some corning storage bowls at Target -- you can get a set of 4 bowls plus no-leak lids for around $23 (a 2 cup, 2-4cup, and a 7 cup). They have squares as well.
I have been switching over to glass or ceramic for food storage containers as much as possible, I still have a lot of very nice Tupperware containers but am using them primarily for storing non-food items such as craft supplies, etc....I still occasionally use plastic for taking food on the road but would never microwave in it.
I'll store things in plastic, just because I have a bunch of them and they stack nicely. But I never heat things in plastic. I doubt there's much transfer between the plastic and food at room to fridge temperature (at least on the time scale that I store the stuff - a few days), but if I have to re-heat leftovers at work, I make sure it's not in plastic.