After my recent interweb troubles, I have decided to move away from 1and1 and have chosen the hosting services of eUKHost - they seem to offer a lot more for a similar amount of money (after using a discount code).
The new set has around three times as much guaranteed RAM, 4x as much Burstable and almost 4x the bandwidth as before. (which I don't really need. yet.), two ip addresses as standard, and fast help, either as live chat or over the phone 24/7.
So far the new service has been excellent - they even transferred the data and settings over for me!
After the troubles with 1and1, this is a massive relief and I would recommend them very much for hosting.