SolarWinds is a good choice. Some others to consider are Splunk, Graylog, IBM QRadar and SumoLogic. The last is interesting because it is relatively easy to configure and you can add other open source logging tools, like PacketBeats, which is a lightweight packet shipper…

That would also depend on how much the budget will support and how granular you want to get.  If you want a full solution that will be significantly more than a patched-together solution using open source tools and Windows native logging tools.  What specifically are your…