I have both the Nova (not the Pro) and the Likebook Mars. Comparisons must always proceed with caution, because displays and lighting can vary between individual units of the same device. In my experience, the Likebook Mars is very good. However, I would rate my Nova as slightly better in text crispness, lighting, and overall performance. I use my Nova far more often than I use my Mars.
I have also used a variety of USB-C cables with my Nova, and all work just fine.
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