How do I 'compare' picture 'quality'?

castle96

3 tvs....
2500PCI
50Hz
3500PQI
which would be better picture (not interested in Camera/Alexa, etc, just quality pic. How do I compare/what should I look for. (55 ") What do these terms mean?
??????? Looking to buy at £550 reduced price ('reduced'.. same price £549 at Currys and|Richer sounds. C is reduced by £350, RS is reduced by £100 ! Same price now £549!

Neil_Jones

50Hz is the refresh rate, how many times the picture refreshes per second.  Standard in this country is 50Hz.

The PQI (and to an extent PCI) thing is marketing, from Samsung.  Doesn't mean anything in reality, its just a blown up method of the Hz thing.

getmore4less

Which tvs are these? 
What use cases?
Sources
Motion requirements Eg sport. 
...... 
Viewing angles required? 
Do you want any HDR capability?

How bright do you need it?
Do you want good black levels?
....

getmore4less

A good starting point for 20/21 models 

https://www.avforums.com/threads/new-my-best-value-tvs-2020-2021-edition.2325951/

castle96

what is HDR please

JJ_Egan

https://www.consumerreports.org/lcd-led-oled-tvs/what-is-an-hdr-tv-and-should-i-get-one/

getmore4less

High Dynamic Range. 
Wide colour gamut is also important for improving picture quality.

getmore4less

Overview of lots of terms. 

https://www.avforums.com/articles/television-terms-tv-glossary.11423