Acch. I just got back from a sales presentation (actually a clubbing) from a *nix vendor and this raised a question for me that I hope will fit me'ah.

Basically between the 'big' players of *nix (HP, IBM, Sun) or just commerical *nix in general:

1) Are there any 'good' tutorial sites for people who want to learn more about those?

2) In comparing how these OSs' perform, has anyone found some good benchmarking data that is neutral of the vendor who sells that *nix? Why am I asking? Because after the sales pitch I and others just went through, I am really questioning their data and their 'superior performance' over their competitors.

Last - just wanted to mention that this is a great thread, so thanks to everyone for the great information, especially TheFiend and DigitalSyntax. Great info!