I'm looking for a hosting solution that can offer me high bandwidth (50 - 80 GB / month ) and fast access. The site needs to load pages fast and retrieve data from a MySQL database fast as well.

I need PHP and MySQL.

I have looked at:
http://www.gighost.com

Are they any good ? Anyone tried them?

Can you suggest others?

there are plenty of sites who offer that much bandwidth.

Check out the Advertisement Page in this forum, You will find what you need there.