3Mbps is nice, I dropped COX HSI in NOVA though because of frequent outages, horribly inconsistent latency/ping times (sometimes pings would stay at a constant 10ms for a site like dslreports.com, sometimes they would skyrocket to 500ms and sometimes the packets would just never come back!), inconsistent speeds (During peak hours in my area the speeds would jump up and down), and the biggest killer of all is the download/upload caps. Cox limits the amount of data you can download to 30 Gigs a month down, 2 Gigs per day and for uploads its 10 Gigs a month down, 1 Gig per day. Now this doesn't just count files you're downloading ... it counts everything including someone that might be DOS'ing your line with packet floods.
I switched to Covad's SOHO package (1.5/384) and have had 0 downtime since switching, consistent latency, and consistent speeds ... Plus no nasty emails from Covad about downloading or uploading too much.