Add a work you know and a work you are aiming for: What do we play next? compares their difficulty and the skills required, on the same scale as its « what to play next? » recommendations.
Search for a first work above — for instance the one you have just finished — then add the one you fancy. What do we play next? gauges the gap between the two: same level, a little harder, normal progression, ambitious, or too hard all at once. You can compare up to 4 works at a time.
The verdicts rely on the same difficulty scores and the same thresholds as the « what to play next? » recommendations — see the method.