A lot of cable companys just upped the bandwidth cap. That's the main reason cable is doing so well. FYI for people, as someone who works with a lot of different COs and with the helpdesk direct, etc, they're talking about upping bandwidth on DSL as well. You can expect to see something as early as mid next year. Probably sooner. DSL just can't compete with cables new bandwidth.
Cable you share connection with everyone else on the same circuit.
DSL bandwidth is YOUR bandwith, but limited to CO proximity.
Best thing you can do is choose what you're happy with. You can't go by technology type. Cable has been pretty stable and i haven't seen as much fluxuation as you used to. And DSL ttechnology is progressing and more COs are becoming available in various areas. Just do your homework and make sure you're happy with your PROVIDER. Screw what type of technology they use to get your connection there.