Looking for the ultimate viewer

[Ed Landau]

Hello: I have been using NLog for over a year  (with my C# Console Application) and have been usign GamutLogViewer.  I really like it.

The thing I like most about it is that I can color rows with specific words in it.

However, I am thinking of using a database to log everything so it is easier to filter and see related data.  I have implemented this since my app is already using SQL Server Express (though my implementation logs all levels :(  ) Microsoft SQL Server Management Studios has a nice built-in viewer but it's UI is lacking and does not offer color-coding of rows based on keywords (or anything for that matter). 

This is a mission critical system that will be logging many transactions.  What is the best mechanism for logging? File? Database?   Also, what viewers are people finding the most usable?

Thanks,

-Ed