This bothers me a lot! So, if you are a using Firefox on a MAC, here is a tool to get around this monstrosity by fooling the site into thinking you are using a Windows Machine. UPDATE: It appears that Orbitz will show MAC users higher end results (e.g. better rooms, nicer cars etc.)

https://addons.mozilla.org/en-US/firefox/addon/user-agent-switcher/

Or, if you are using Google Chrome, here is the tool;

https://chrome.google.com/webstore/detail/djflhoibgkdhkhhcedjiklpkjnoahfmg