Cable Internet vs DSL
One key difference is that DSL is not a shared connection, whereas cable is. A shared connection is a connection that can be used by more than one subscriber. DSL uses your phone line, which is exclusive to your home or office. Cable can run through entire neighborhoods, buildings or apartment complexes.
In general cable can support higher bandwidth speeds, and the service radius from the CMTS can be larger than would be served by a similar DSL’s DSLAM. Cable modems are typically faster when the cable infrastructure is either new or it’s been well-maintained.
For the casual user that doesn’t need that fast of an internet connection, DSL is going to be a good option. In most cases, it’s cheaper than cable internet, has just as fast of download speeds and almost as fast of upload speeds.