Fast and easy to set up, very configurable. I spent less time setting up both Analog and Rmagic than I anticipated. A lot of people have very positive things to say about the speed of Analog; it seems quite fast to me, however, I have not benched it against any other products. The -settings option is awesome to show exactly what will be included/excluded in the report (I believe you can nessle up to 50 config files). The report can be in 3 formats, HTML, Computer (data), and I think one other txt/data format. Rmagic, a perl script than uses Analog's output, creates slick looking HTML reports with an index. Rmagic makes the output look as good as any log analyzer I've seen.