The Aluratek Libre Pro and the Ectaco jetBook are the same Dr Yi,
https://wiki.mobileread.com/wiki/Dr._Yi device including the same display.
Each company is marketing a device running under their own firmware,
that is a mix of the Dr Yi supplied OS and low level routines, and their
selection of other embedded software.
There should be no real difference in the displays.
Luck;
Ken