Looking for a System performance package.

[Bryon Beilman]

I am looking for a Unix performance analysis program.  I wish to look at
the number of users, load, disk space, uptime, all with some kind of 
graphica output.  The output should be saved in some kind of log file
as well.  I am looking for something more meaningful that iostat, and
something similar to xload (with file output).  I would of course prefer
public domain, but am wiling to pay for the product as well.

thanks 
Bryon