Do the math! It may be a very simple decision, once you really do the
math.
If it pays to buy, why not go for it? A few good reasons not to buy:
You plan to move. If the new place does not have cable modem service,
or the provider only wants rented modems you should think twice.
You plan to buy a non DOCSIS modem. Think twice. Your provider may want
to change to DOCSIS anytime. All the modems on this page are DOCSIS
compliant, your gurantee for optimal compatibility.