I've used the Rockler product. I personally didn't think it worked as well as Anchorseal, but that's just an anecdotal comparison. Meaning, I've never had the two products at the same time, used them on the same wood stored under the same conditions.
Given how far it goes, I spend the extra and rely on Anchorseal.
I would be great if someone had the top 3 products and did a comparison with the top 3 other alternatives (glue, latex paint, etc.) on the same wood stored in various environments.