Even the Medium Varrock Diary offers an extremely useful quality-of-life upgrade:

Toggle Varrock Teleport to RuneScape gold the Grand Exchange: This feature is invaluable for both Ironman and standard accounts,allowing you to quickly access the Grand Exchange from the Varrock teleport spell without needing extra steps or items.

This simple convenience saves countless seconds during banking or trading,making your gameplay smoother and more efficient.
Kourend and Kebos Diary

The Elite Kourend and Kebos Diary is challenging due to its demanding requirements,including high Slayer and Woodcutting levels. But the rewards are well worth the effort:

Unlimited Teleports to Mount Karuulm: Essential for those who use Konar as their Slayer master,allowing quick access to this multi-combat area.

Boots-Free Combat: Fight monsters on Mount Karuulm without the need for Boots of Stone or Boots of Brimstone. This frees up an equipment slot for better boots like Primordial Boots during Hydra fights.

Increased Slayer Points: Completing this diary grants more points per Konar task,accelerating your Slayer progression.

Rada's Blessing 4: Considered the best-in-slot for the ammunition slot,it boosts combat and fishing efficiency. For example,it provides a small chance of cheap RS gold catching two fish at once without extra XP and grants minor combat bonuses.