A "better" PDF is not just a scanned picture. It is OCR-ready (Optical Character Recognition), meaning you can press Ctrl+F (Find) and search for words like "Riba" (usury) or "Jannah" (Paradise). If you cannot search the PDF, it is not better.
For Windows users, Zekr or The Holy Hadith (Alim Software) has integrated Jami ul Kamil modules. These are SQL databases, not PDFs, but they are functionally "better" for research. jami ulkamil english pdf better
The PDF should include a foreword by Sheikh Abu Khuzaimah Ansari or Dar-us-Salam stating the chain of narration back to Imam Azmi. If it lacks an ISBN or publisher info, delete it. The Ultimate Guide to Jami ul-Kamil: Finding the