The YN560-III adds a built-in radio receiver, while the YN560-IV includes both a receiver and transmitter, offering enhanced wireless capabilities over the YN560-II.

The YN560-II is praised for its brightness, reportedly outperforming some other models like the YN467 in terms of light output.

The YN560-III provides significant functional improvements for only $65 new, a marginal increase over the YN560-II, making it a cost-effective upgrade.

Owners utilizing the YN560-II as simple slave strobes report satisfaction, emphasizing its utility without the need for advanced features like built-in receivers.

It's noted that the flash can still function reliably after physical impacts, such as an 8-foot drop onto concrete.

One owner of the YN560-II with a Canon t3i highlighted its reliable performance off-camera using RF603 triggers, contrasting with issues experienced with the YN467 on-camera.

Some units emit a faint ticking noise while idling, attributed to capacitor activity, but this doesn't seem to affect functionality or longevity significantly.

Removing batteries when not in use and utilizing power saving mode can mitigate concerns about capacitor wear due to constant cycling.

Despite minor noise issues, the YN560-II is favored as a budget-friendly option for strobist setups, often paired with light stands and umbrellas.

Despite specific compatibility notes, the YN468 II functions well on a Canon 60D, but users often prefer manual mode over TTL.

Some owners report intermittent loud ticking, but the noise is not constant across all units; others notice it only in quiet environments.

The YN560-II is chosen over the YN460 for its higher power, despite lacking TTL, which is not needed with manual mode use and cheap triggers.

The YN-468 II has brand-specific versions, with TTL functionality only compatible with either Canon or Nikon, not both.

Some confusion exists about compatibility listings for newer camera models, as product titles may not include every compatible model due to length constraints.