Sprint/Cox, routers, and DNS

I've had Sprint Broadband for a couple of years and had slow times in my
service during the day, no big deal. But, lo and behold, when I finally
hooked up a caching DNS box inside my LAN, suddenly my service is
EXCEPTIONALLY FASTER. It is so nice to not have to rely on their DNS
servers except on new addresses. If anyone hasn't done this yet, I highly
recommend it. It was amazing to see the difference.