Have an Actiontec GT701D modem that has been working pretty well for 3 or 4 yrs. Thinking about upgrading to another Centurylink DSL modem as they have upped my Mbps from 3 to 8mbps. Have to reset my current modem periodically. Is there a better modem to use to get the higher download speeds. They're telling me i'am getting 8 mbps but all i've ever tested out on my end was about 5 mbps. Oh yea, running a 6 year iMac OS 10.7.5, also have airport extreme routers.