Customer Rating: 
Summary: Probably not the best, but more accurate than others
Comment: When you're child is too old for rectal and not old enough for under-the-tongue, you get this one.
I first bought a Braun ear thermometer that turned out accurate only a small percentage of the time when I got the angle into the ear correct.
I have since bought this underarm thermometer and it is easier to use and therefore gets a more consistent temperature. My 19 month old allows me to hold it under her arm and it only takes 8 seconds, then beeps to tell you it's ready. Very easy to use. You do have to remember to add 1 degree onto whatever reading you get to get the accurate temp.
When my child had a 102F fever last week, I used this thermometer AND the Braun ear one to double check and was able to match up the readings easily.
Only under-the-tongue or rectal thermometers are the most accurate. Perhaps the temporal one as well, but I am not familiar with that one.
Otherwise, I feel using this thermometer and double checking with an ear one is your next best bet.
Customer Rating: Summary: Junk
Comment: This "Themometer" proves you can't get something for nothing. Fast and cheap never works. This thing never gives the same reading. My baby was burning up and this product gave a temp reading of 98.5, using a real Themometer under the same arm found it was 102.5. This was not the first time this happend but its the last because this thing is going in the trash.
Customer Rating: Summary: Durable, reliable, and accurate
Comment: This is the thermometer we reach for first, of the three we have purchased. It is consistently a fast read, providing an accurate temperature within seconds, so you don't have to hold a squirming little one with the thermometer clamped under their arm.
The display is big enough that my two-year-old can watch the numbers climbing as his axillary temp is being taken, which encourages him to hold still.
It provides a pleasant beeping when it is done reading, and a more urgent beeping if the temp is into fever zone.
As an added bonus, it is quite well sealed, and therefore has a good level of water-resistance, which always helps when you are dealing with a sick child!
