ua40d6960 vs ua40d6940 vs ua40d6920

[sadra]

i wana by one of 40d6960-40d6940-40d6920.but i don't know which one is better and economic.
if i buy 40d6920 can i change to 40d6960 and change motion rate from 200 to 400?
is different hardware in those models or just software ?
sorry for my english.

[erdem_ua]

AFAIK, last 2 digit doesn't make any changes on TV hardware but case type (the plastic shell of TV, just related with appearance, nothing more.).

We need to put some rule like "feel NO sorry about English."

[sadra]

tnx for answer
but the way,if there is not any different in hardware .why motion rate in 40d6920 is 200 and in two other models are 400.

[erdem_ua]

I don't expect any difference at software+hardware between this modals.
CMR is something "artifical". Something invented to cheat the consumers.I believe you can't see any difference between those modals but you have better to test them side by side at some shops.