Where I work, we use both SentryOne and SolarWinds. Honestly, I could spend more time familiarizing myself with the tools. Getting an alert every time an event falls outside a set of predefined threshold parameters can result in a LOT of alerts, especially when monitoring dozens of transactional servers. When it comes to monitoring, what I've instead found to be most useful is baseline analysis. Don't tell me when something potentially bad is happening, instead tell me when something out of the ordinary happens.