Well after long deliberations I've actually purchased a TP-Link TL-ER5120 Multi WAN Router.
Installed last night and so far so good. Both VM and BT connected without any hassle, and I configured my RT-66 as a Wireless Access Point for the router.
NOTE!! This does not do bonding, just Load Balancing and Failover!!
However, there is an awful lot of configuration to be done yet, so I expect this router to perform even better once I've had a chance to get my head around the many features
