Best drool bibs?

My little one is getting teeth and long story short, the Parent's Choice mock-neck bibs are the only ones that work for us. The others either soak through within an hour or two or don't even cover the neck, and he's starting to get a really bad rash from the drool. However, these bibs are only available in a pack with other, standard type bibs (that we don't need) and I can't find them anywhere else. Not in another seller, brand, or anything! Are there other bibs like this that are just hiding from me? If not, what's a great bib that ACTUALLY covers the neck and takes more than 2 hours to soak through?