which one better or pros/cons of both

 

Hello,

Read the wiki articles to get the differences:
http://en.wikipedia.org/wiki/Oled
http://en.wikipedia.org/wiki/TFT_LCD

Bertus

 

TFTs can break more easily, but are cheaper.

OLEDs only draw current for areas that are lit.
TFTs draw constant current for full area LED illumination.