I am currently using the Murph's risers and wedges as well, but like VirginiaJim, I too have herniated disc in my neck and back and found this setup wasn't enough. So I ordered the Horizon bars (which should be in saturday) in hopes this will be way more comfortable. If so, then the price would be null compared to the comfort, as I do 7 - 8,000 mile trips during the summer.
I'm gonna put the risers and wedges up for sale on here as soon as the new bars are installed.