The first thing I noticed when I took them out of the box, was how very sturdy they are. I don't know if it's my imagination or not, but the glass seem thicker to me than the set I've had for 7 years. I really like how sturdy they are. The second thing I noticed are the different shapes. They are completely different shapes and sizes than the ones I have now, so that is a bonus in my eyes. The last thing I noticed is how different the lids are. The lids are very thick with a very nice seal on the inside and a easily usable vent on top for microwaving. I really like how easy the vent design is, because the previous set I had with the vents wasn't as easy to use.
I've spent the last few weeks really using these containers. I've taken my Greek Pasta Salad with Chicken to work in one of the containers with the red lid, I've stored the rest in my refrigerator with the big round one with the blue lid on the bottom. They worked great. No leakage. I've stored some leftover corn from dinner in the medium-sized round one with the blue lid, and I brought ranch dressing to dip my carrots in at work in the little one with the green lid.
The only negative I see in these, is the lid is quite thick, so it's not as easy to store as my other pyrex. With that being said, there is a reason they are thick.....and it's obviously because they are no-leak lids, so they need to be.
You can find the PYREX ® 10-pc No-Leak Lids Set at http://www.shopworldkitchen.com/pyrex/no-leak-lids-10pc-set-1107457 OR on Facebook at https://www.facebook.com/PyrexHome?fref=ts?.
*DISCLAIMER: I was given a set of PYREX ® 10-pc No-Leak Lids Set in exchange for a review and my honest opinion of the product. All opinions expressed here are entirely my own and may differ from others'.