Mummy to baby, do you read me? Roger that. Over and out.
1. Motorola MBP36S Digital Video Monitor. Has a very clear video, the monitor can be adjusted remotely, it reports the room temperature and it has a two way function. And if you have a second baby you can link a second camera to the monitor. Buy it here.
2. BT 400 Digital Baby Monitor - a great option on a budget. It does the job - great sound quality, volume adjustment, nightlight, two way function. The battery on the receiver doesn't last very long, but it can be plugged in to recharge. Buy it here.
5. D-Link Eye-On. For the tech savvy, and for those who have a good wifi connection. You can pick up the picture on your phone any time / anywhere, the picture is incredible, and you can adjust the sound threshold so that only loud noises are picked up. Buy it here.
If you are out and about without a monitor, but have two iOS devices, you can download a baby monitor app which transforms your devices into a monitor and camera. See for example iSitter Baby Monitor, Cloud Baby Monitor.