So as the company I work for has been expanding we have been adding more and more switches for the computers, game consoles, phones and more. We need to make the upgrade to a total gigabit network (instead of the mix and match network equipment I have, including an old 24port hub), but since I am going to be adding new switches should I go for anything in paticular? Brand? Features? Type?

I have a network with over 50 computers, a number of servers, 50 of both the PS3/XBOX360 consoles, 50+ IP phones and over 50 employees. What would be a good way to configure this type of network or does it not really matter enough for a company of my size? Is there some sort of network segragation or design I should use?

If I left out some pertinent information let me know and thanks for any knowledge you wish to drop on me.