Alternative to sysprefs for rotating desktop pictures on multiple displays

[mattspace]

Hi,

So this one has been bugging me for years - I have dual displays, and I want to rotate the desktop pictures so I can avoid image retention issues from dropshadows on windows that rarely move etc.

I want the same image on both displays.

Problem is there's a longstanding bug / behaviour with the Desktop & Screensaver prefpane, where after a short while the images will drift out of sync.

Does anyone know of a third party app that's more robust in its ability to sort this?

thanks.