I like the glass with snap on lid containers too. I got a good deal on them at Costco a while ago. Just snap off the lid, cover with paper towel, and microwave.

With glass containers, you need to make sure that you give them some time out before putting them in the microwave. Drastic changes in temperature can cause glass to shatter. I don't mind microwaving plastic, but I prefer containers be BPA free and very sturdy. Plastic is also a lot lighter than glass, so if you're taking containers with you they might get a little heavy.

I love my Glasslock containers! Some can be used in the oven. I've had no problems with them going from freezer to microwave. Be aware that the lids are NOT microwave safe.

I bought mine at Costco and got a great deal, but they are also available at Bed, Bath & Beyond and The Container Store.

I have the glasslock containers pictured in this post. I love them. I bake in them, freeze in them and microwave in them. They're great as a 'grab and go' lunchbox option for grownups. Can't say enough good things about them.

I have a set of leak-proof Pyrex containers, and I also *love* my Food Saver. That thing changed my life!

Versaglass! http://www.ziploc.com/whatsnew/Pages/ZiplocVersaGlassContainers.aspx

came in to say pyrex! they come in all sizes and with different colored lids.

I too, love my glass containers with plastic lids. That said, they're not always space friendly, and they're heavy when packing your lunch. I use them for leftovers I'll eat soon, in the fridge, mostly.
When making big batches that I'll put up for lengthy periods of time in the freezer, I often measure them out (1 cup of beans/pumpkin/soup, 1 lb cheese, etc) into Ziploc sandwich bags. Then I seal that bag inside another bag (2 layers against freezer burn!) and put the collection of bags in a gallon size Ziploc freezer bag. You can label and date that bag. This helps save space in the freezer, and avoid eating the same thing for days on end. Then, if I want some soup that I froze last month, I just break out the single bag, and put it in my lunch box the night before. I take a microwaveable bowl (yes, usually glass), and empty the now slushy bag into it. No microwaving in plastic, and yet yummy, cheap, food.

I second pyrex! I switched from plastic to glass a couple years ago. They are perfect for transporting food and heat up great. The only thing I'd recommend is when you heat things up, the glass can get hot so wait a bit before you take it out!

@Pi, the ovenproof Glasslock containers (a later model) are made from borosilicate glass (like Pyrex) that is not susceptible to cracking during extreme heat changes. We exclusively use Glasslock (bought in sets from Costco) and absolutely love them. They're durable and safe for microwave and oven. The Container Store also sells individual pieces if you happen to misplace one or just want to buy certain sizes. Highly recommend!

There's a restaurant supply store that's open to the public in Lombard. I bought some pyrex stuff for my wife there last year. They have all kinds of stuff for the home, but their main thing is commercial stuff. Great quality supplies. I've got the green lid snap-on ones at home, got 'em at bed bath.

Um, yeah, what they all said....go with glass, not plastics. I use canning jars too, when applicable, for soups and such.

Canning jars. Wide mouth, pint and quart sized canning jars; leave enough head space (1-2 inches), and spring for the plastic caps. I like to freeze things uncovered, and then plop the cap on just in case I misjudged the amount of expansion. Cheap and easy.

I also use canning jars to store, heat, and carry food. There are some great sizes for single sized portions too.

Agreed on the canning jars. I haven't tried the plastic lids yet, but I love the fact that I can throw a jar of soup in my bag and I know it won't leak.

Pyrex! The best deals I've seen come from World Kitchen, but they're not the best at packaging (though they will replace upon confirmation of damage, usually by a picture of the open box).

Glasslock is great. They nest nicely. Only disadvantages are: they slip around when they are stacked in the fridge and last time I checked you can't order replacement lids.

Bormioli Rocco Frigoverre! You can find them marked down at HomeGoods, T.J. Maxx, and Marshalls.

Pyrex. I have been buying vintage pyrex on eBay and using them to store small portions, and larger portions. Love them!!!