What is your favourite system performance tool?

From: Grace (sysloadz_at_yahoo.com)
Date: 02/13/04 

Date: 12 Feb 2004 17:57:07 -0800

Just wondering which was the simplest, easy to install monitoring tool
around. SNMP, MOM, Nagios, Red Point, HP Openview, BMC Patrol,
BigBrother, BigSister, MRTG, BMC, EHealth, NetIQ?

Have you tried Sysload? www.nrgglobal.com It is said to be one of
the most useful with minimal clutter. Has anyone tried the demo?