I want to start by discussing monitoring in general. Monitoring products are in a funny place in the IT world. Many companies consider them a luxury and not necessarily a requirement. When they do start going down the monitoring road they almost always start by looking for a product that can do it all. This will typically lead to the conclusion (correctly) that there is no singular product that can do it all. One thing I learned while growing up with grandparents and my dad being produce farmers, you always pick the right tool for the job. As they say, and I believe this applies to monitoring software as well, if all you have is a hammer, everything is a nail.