Important tv comparison points

[ChroniC]

I can't really find anywhere that I can visually compare tv's so I'd like to know what people think is more important.

http://www.displayspecifications.com/en/comparison/db91e392

For instance these.

8bit vs 10bit
hundreds of billions of colors vs billions
lower ppi vs higher ppi.
etc

I would have though the 40inch samsung was better with the higher ppi even though it's a smaller panel.
But is 10bit vs 8bit matter, 30bit color vs 24 matter.

Kinda just hoping there is a clear answer to what's the more important values.

 

[ChroniC]

For what reason, is the bit depth more important than the pixel density?
Could you explain your choice?