Hi Blackduckies, i have just been hiring a doppler from first beats. It works great, and the good thing is, if there are any probs you can send it back and they will replace it. The ones you can buy online, unless you spend heaps of money, arent that great quality. I did a lot of reading prior to hiring!! Now that the bubs move all the time, we arent using it so much, max once per day, but early on we were using prob twice a day.
Have fun