Not sure whether or not to get one of the baby monitors with a sensor pad to avoid sleepless nights staring in the cot doing the whole 'are you still breathing?' thing. If you have used one of these before which did you have and would you recommend? A friend has suggested the Tommee Tippee one but has anyone else had this? Also, if I did decide to go for one without the sensor mat, what would you recommend? Not particularly bothered about a video monitor, the audio is more important to me. Many thanks!!