I ordered one of those dopplers from babybeat.com, it came today. I was so excited to get home and I was sooo not dissappointed either. It took me about 10 minutes but I finally found the heartbeat... 172 BPM!!! Now I can check the HB anytime I am worried. It was such a great feeling to find the HB and for it to be sooo strong. This was well worth the money it cost to rent.