The 'Best of Both' layout mode in Atticus primarily prioritizes the removal of Widows and Orphans, and then making minimal adjustments to the spacing between words and letters on the opposite page to create a more balanced appearance.
However, in instances where there isn't enough textual content on the opposite page, such as when the opposite page is predominantly filled with images, this automated layout may face challenges in appropriately adjusting the layout to maintain balance due to the limited text content available for adjustments.
For texts with image-heavy segments, selecting either Widows and Orphans or Balanced Page Spread would likely be more ideal, and manual intervention, like editing text, adjusting line breaks or forced page breaks, may be needed to address either Wirdows and Orphans or Page balance on a case-by-case basis.