In reply to a post by pete_thomson:

I can't comment on VOIP, but on both the 20Mb and 50Mb speeds I found the ping and jitter to be very low, lower than I've ever had on ADSL.

As I said, it depends where you are in the country. VM is a postcode lottery

Your coax may be fine, but that pattern looks very like someone switching on a connection for 12 hours of the day to download masses of content.

On a quick sample of VM BQM versus BT BQM - the BT graphs in general do look better.

Was only a visual comparison, but does bear out what people are saying. There is the odd good connection for VM, so it being geographic seems a reasonable assumption.