When you span an area with any kind of structural beam; the wider the span, the wider the width of the beam, so, inevitably, you will always loose some headspace. A 30' span will definitely create a loss of headspace, especially so in a basement location.
I have a link to a company that we have done business with (used their steel structural beams) They fabricate beams that a 'square shaped' and hollow in the middle. This allows them to use less width to create higher deflective strengths = beams that save on 'headspace'.
They have an engineering dept. that you can contact by phone to discuss your design requirements with. Generally, companies are eager to help customers figure their structural needs out....and very few companys will charge you for the actual engineering services required, as long as you end up purchasing the beam from them.
FWIW - We found their pricing surprisingly very reasonable.
Picture of one of their beams for spanning:
Here is a link to the phone number for their engineering dept: