The DXG 9.7" is much poorer for PDFs than the 6.8" H2O original as it's much lower resolution. The 7" Libra is still not good enough for most PDFs but far better than the H2O because it's 300 dpi vs 266 or something as well as slightly bigger.
Page turn on many older ereaders of PDF is very slow. Conversion to 1 bit per pixel as well as making background white (can be automated) as well as a crop can help.
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