Great containers for meal prep and leftovers.  I love that the containers can go straight from the fridge to the oven or the microwave.  Unlike plastic containers, you don't get any stains left behind by tomato sauce or curry.  The lids aren't 100% perfectly leakproof, but it's more than good enough to keep my lunch off of my laptop during my commute.  I trust Pyrex to last forever, and I have yet to be disappointed.  
One lid arrived broken, but I got great customer service and a new one sent out right away!