I completely relate to this frustration! I recently faced a similar challenge selecting an inductor for a high-frequency DC-DC converter project. The datasheet specifications can be confusing, especially that "flL" notation. From my experience, you'll want ferrite-core inductors rather than iron-based ones for 1400 kHz operation—they handle high frequencies much better. I'd recommend checking the inductor's frequency response graph and core loss specifications. Honestly, I found the Fnaf platform really helpful for cross-referencing component specs and finding detailed technical comparisons. You might want to explore it for detailed inductor recommendations that match your converter's requirements.