Polar CS500 Cycling Computer with Heart Rate Monitor

I usually ride an average of 35 to 45 km semi flat routes and I started to find myself exhausted at some stages, while another ones I felt I could actually keep it longer. So I decided to improve my performance by getting a heart rate monitor and then I found this Polar CS500 cycling computer. The price was about $230, what I thought it was a bit too expensive, but after I was able to test it I wondered about how many featurings and extra functions it includes. It is quite easy to handle and set up, but you will also need a computer to transfer all the data to the software that process all this info and tells you your statistics. I personally found this software a bit more complicated to use than the heart rate monitor, for example.