If you are using ASP, ASP.NET, MS SQL or MS access in your website then you should choose Windows 2003 plans or if you are using normal HTML Website or PHP or MY SQL database then Linux is best.

Performance wise both platform are good. But Linux have some advantages like fantastico, easy to use, cost effective etc.

You can check Windows & Linux Hosting Control Panel Demos at: http://www.znetindia.com/cpdemo.asp