I have had this heart rate monitor for about a month now. The display is clear and crisp, and controls are very easy to manipulate, even while working out. Other reviewer's have complained about the display combinations, however, I find that for my fitness goals, viewing the time elapsed in my workout and my heartrate are the most useful, and both can be viewed together. I am not looking to lose an enormous amount of weight or significantly improve my level of fitness. Rather, the reason I bought this heart rate monitor was to be able to see how many calories I burned per workout, what my weekly averages were, and for the ability to measure general fitness levels via the built in test. On every front, the FT40 delivers beautifully.
In terms of using the actual machine, the chest band is extremely comfortable, I barely notice I have it on, even during ab exercises or yoga. I appreciate that the noises can be turned off, especially when I am exercising in a quiet environment. I rarely use the FT40 to control where my heartrate is, as I am primarily interested in getting it as high as possible for as long as possible. Not having to hear the beeps when I am reaching my maximum rate is an asset.
Similar to the chest strap, I find the wrist watch comfortable and attractive, despite my child-sized wrists. The face is bulky, which can get in the way when doing any wrist-isolating motion, however, I have been able to work around it.
Overall, I am very satisfied with my FT40 and would be likely to buy it again.