Is it worth using a ThinkBroadband "ping monitor" 24x7, to see how consistent the high ping time is?
http://www.thinkbroadband.com/ping
It looks like TBB are back up with a new website, and the BQM's have had a small update - they can now work to a hostname, not just an IP address. If your IP address changes, then BQM will work with a "Dynamic DNS" name that has been updated with the new IP address.
