Stop Moaning
There are some really poorly informed people out there. This is Cable Broadband people.
There is no such thing as a 3K rule on Cable
Contention remains the same but as burst size will increase thus reducing overall time at peak usgae overall strain on the network decreases (assuming you aren't P2P full time). Contention is actually more of an issue on ADSL and not cable and occurs in a different place in the network.
Torrents are not limited by Virgin at all on cable. They don't have the Deep Packet Inspection tools to do it. I regularly receive 2000k on torrents on the 20MB package.
The move to 50MB for the top tier actually frees bandwidth for everyone else due to the technology shift for the top tier.
Stop banging them, they are giving you a 150% speed increase for free and all you can do is moan.
Tried another ISP?