What is the difference between Nissan consult 3/4

Nissan consult series are professional diagnostic tools for Nissan car models. Up to now, the members of Nissan consult series are Nissan Consult-3 plus, Nissan Consult 3, Nissan Consult 4.

	Nissan Consult-3 plus	Nissan Consult 3	Nissan Consult 4
Language	Only English	11 kinds of language: English, Finnish, French, German, Greek, Italian, Japanese, Spanish, Chinese(Traditional), Chinese(Simplified), Russia.	11 kinds of language: English, Finnish, French, German, Greek, Italian, Japanese, Spanish, Chinese(Traditional), Chinese(Simplified), Russia.
Car year	1996 to the newest	1996-2009,parts 2010	1996-2009,parts 2010
Car models	all Nissan, Infiniti, GTR and Renault. Electrombile, hybrid car	All Nissan, for GTR, needs GTR card	All Nissan, Infinit, Renault. for GTR, needs GTR card, for Renault, it needs Renault software
function	Diagnostics, ECU Reprogramming, Immobi and Smart key,	Swift diagnosis and swift repairs, Automated Self-Diagnostics, and so on	Diagnostic efficiency and accurate repair, Downloading of reprogramming data, and so on

There is one picture about Nissan Consult-3 plus, following:

A picture about the Nissan Consult III and Nissan Consult 4 Reprogramming Card:

There are many cards for Nissan consult series, what are they used for?
If you want to use Nissan Consult 4 to make keys, then you need to buy Security Card. If you want to use Nissan Consult 4 to program, you need to buy Reprogramming Card. If you want to use Nissan Consult 4 to work on GTR car models, you need to buy GTR Card.
If you only want to use the diagnose function, then you do not need to buy the cards.