I Think EX Series is Better.
LED is 43K, LCD is 33K also LED one has following features which are not in the LCD
Skype Ready (requires Skype camera CMU-BR100)
BRAVIA Internet Video & BRAVIA Internet Widgets
Wireless LAN Ready & Wi-Fi Direct (requires Wi-Fi adaptor UWA-BR100)
Also LED is newer tech as compared to LCD. So if he can afford then go with LED.