The ones that I started using when I got tired of Elizabethan collars, was the BiteNot collars. They are expensive, also, but come in all sizes, and can also be used whenever needed. And, like the ones that you found, they can see around them, chew on toys, etc. There's a lot less stress for everyone using them.
Let me know what happens with your new ones. Hopefully, Missy won't figure out how to remove it, too!
Just over a week to go!
Love All Life, Thank You For Posting! :)