It sounds like you are asking for a comparison or a "good report" on whether the RK Kanodia GATE ECE (Electronics & Communication) All Volumes PDF is a good resource, and perhaps how to get a "better" version or alternative.

Electronic Devices & Circuits (EDC): Semiconductor physics, diodes, BJTs, and MOSFETs.

The books are typically available in two main configurations: 10-Volume Set

Report: RK Kanodia GATE ECE Volumes (PDF Format)

Verdict in Short:
RK Kanodia’s books are excellent for practice, but poor for learning concepts. The PDF version is useful as a question bank, but physical books or digital alternatives may be "better" depending on your needs.

Is the RK Kanodia PDF Still Better Than Other Authors?

In the ecosystem of GATE ECE books, the primary competitors are:

RK Kanodia is a well-known author of study materials for GATE (Graduate Aptitude Test in Engineering) and other competitive exams. His study materials are popular among students preparing for GATE ECE (Electronics and Communication Engineering).