If Virgin had offered a Gbit connection for the same price, I'd have been completely happy to stay with them. Their cable internet was fine at 200 Mbits, but they were 100% set to exploit the "fastest show in town" act with loads of stuff I didn't want. When I asked for a breakdown of the bill, which was hitting a £100 per month, they completely played the "it's complicated" card so I thought, fuck it, let's just get rid of it all.
Be interested to know what the GBit service costs, because they quoted me £50 for the 500Mbit service and £60 something for the Gbit service (when it's available)...although, fair enough, they admitted they weren't going to beat the £40 Zen price.