Product review (4 stars): Affordable Effective Solution (You may need to replace after a few years though)
I recently reordered these brackets because the previous ones loosened after we made some adjusts (read: royally messed up) our paneled dishwasher door.  Overall, I'm really satisfied with this product.  They were easy to install and align perfectly with the two front brackets that my contractor and counter installers neglected to mount.  In some ways I'm happy they didn't, because now there are no drill holes in my Silestone counter.  I love how this product mounts quickly and doesn't require a separate application of epoxy glue.  My one wish is that they held up a bit longer, but, like I said, we have been pretty rough on our door recently, so under normal circumstances I think these would last more than three years.  They are so easy to install and I think they'd work well with any stone or synthetic stone countertop material.