I am a new pool owner and would like to know what is the difference between the test trips and the readagent testisg kit? I have been relaying on test trips, aquachek trutest digital reader and my pool supplier automated testing system. Some people recommend using a readagent kit.....How is this better than the testing trip? If we still need to color match? Is it a better and accurate alternative? I hate the color matching as I am afraid of reading misunderstanding the results. Please advice.