Give them a call, play the game and you'll end up being offered a much better package for a couple of quid more than you are paying already. Worth 20 minutes of your time although last time I did it, the bloke at the other end was getting near the end of his shift so said to me rather than play...
Virgin broadband is very reliable - I've had it in various forms since NTL back in 2003. Only issues are that the routers can have wifi issues but if you buy your own router then they disappear.
I recently switched back to Sky for TV after quite a while with Virgin. My reason for changing was...