FWIW......I replaced a previous baking dish with Emile Henry (French) product about five years ago. Have been very impressed with it. My dish is sllightly larger than yours but they may offer a size that would work for you. From this experience, I wouldn't hesitate buying more of their line. Link below.

No association with the product....I am retail customer/user only.

Here is a link that might be useful: Emile Henry bakeware

Thanks I'll check them out

I just wanted to second the vote for Emile Henry. I have two of what they call a "lasagna dish" in two different sizes, and they're great. Easy to clean too. And pretty. They are a a bit pricey, but IMHO worth it in the long run. Amazon has I think the best prices, and free shipping.

I'm gonna go my normal CHEAP and suggest you check out thrift stores!?! I often seen square and rectangular pyrex bakeware at GW. As long as not chipped/cracked and not totally crusty (though oven cleaner will get all the crud off)... you'll end up with something that's possibly "vintage" with a good track record.

klseiverd,
That's a great idea! I never would have thought of that.

My Goodwill had nothing. I'm really liking the Emile Henry! How to decide on a color is my next problem! Thanks everyone.