I'm on cable and happy as a clam, after being on a 22KBPS rotten phone line.
I tried your link and it told me that I have over 8MBPS download and over 1 MBPS upload. I don't believe that, but I'll not argue. It's sure better than 22KBPS.
However, in the two years I've been on cable, I've had to replace my Network Interface Card twice. DSL is not an option in my neck of the woods, and never will be.