Mega Screener is accessible only to Premium Members.
The Mega Screener is an advanced screener with more functionality than the screener available to all users. It has 254 filter fields instead of 147. Then you would be able to have criteria like Standalone and Consolidated Ratings and not just the Default Ratings.
In addition to this, you can also edit and save views, which you can't do in the normal screener. You can also have more companies in your compare screen. The below images should help you get an idea about the functionality of Mega Screener.
To become a premium member, click here.