Project X is a strong option for learners who already feel comfortable with English and want a more demanding challenge. Listening can be difficult because the dialogue moves at around 113 words per minute, leaving little time to process each line. The vocabulary is not overly technical, though it includes enough variety to make the practice meaningful. Also, jokes, quick reactions and casual exchanges are a regular part of the dialogue. The story gives enough context to follow what is happening easily. If your English is close to B1/B2, Project X can be useful for getting used to faster spoken English.
