Well, we have bog standard tomy ones at the moment that we used for about 6 weeks when dd was first born, but because of all the interferance we havent used them since, and she has a goodset of lungs on her so we havent needed them anyway.
However, baby number 2 is due in october, and i would realyl like a set that dont have interferance - anyone reccomend some fairly cheapish ones that DONT interfere?!