I bought this as I dropped my old ceramic roasting dish and it cracked. A friend recommended Pyrex as being hardwearing, and when I saw that I could get a dish with a lid, I thought that was a great bonus.
The best thing about these dishes is that they are so versatile. They can be put in the fridge, freezer, oven or dishwasher (Pyrex is also microwave safe, but you'd need a big microwave to fit this in!).
If I am making food to freeze for later in the week, I can simply cook a dish such as shepherd's pie or lasagne, leave it to cool and then put the lid on and freeze it. Before having this dish I would have had to transfer it to a Tupperware box or cover tightly in cling film. A bonus is that Pyrex isn't porous, which gives me confidence that my food is being stored hygienically.
I have found the dish to be very durable - although Pyrex is not unbreakable, this managed to survive being knocked off the draining board onto the floor. Both the dish and lid are very easy to clean, and even when I've used scouring pads to clean burnt on stains (probably not recommended really) the dish hasn't scratched.