I don't believe you can compare Efke and Forte. They are both high silver films but the Eke films are thin emulsion while the Forte films are very thick emulsion. I've also found the Efke films to be true to their ISO while the Forte films usually work best rated a stop slower.

The Efke 25 is my favorite film. It has just become available in 11x14 from the jandc site listed previously. I cant' wait to process my first 11x14 ISO 25 negative.