Vagcom 15.7.1 HEX CAN USB Compare with Vagcom 12.12.1 HEX CAN USB, which is better?

Vagcom 15.7.1 HEX CAN USB Compare with Vagcom 12.12.1 HEX CAN USB, which is better? 

Customer Question:Hi, I need one diagnostic cable for my Audi. can you recommend one suitable for me?
Answer:I suggest you to try Vagcome Diagnostic cable:Vagcom 15.7.1 HEX CAN USB and Vagcom 12.12.1 HEX CAN USB.

Customer Question: My car is the year of 2014 Audi. Which one should I take?
Answer: Your car can use the two. Here is the comparison form of them below.

Item Appearance
Item Name	Vagcom 15.7.1 HEX CAN USB	Vagcom 12.12.1 HEX CAN USB
Price	31.99$	19.99$
Language	French	French
FW Version	1.94	1.92
Support PC System	Windows 2000, XP, Vista, win7, win8, win8.1 WIN10	Windows XP, Windows 7,Windows 8
Update	NO	No
Feature	1.New more universal Airbag Coding Assistant. 2.New "Upload Debug/Log File" function in Applications Dialog 3.Completely revised and expanded ROD (ODX) Data. 4.New USB Drivers. Now compatible with the latest PCs which use Fresco Logic USB3 chipsets. 5.Refactored DTC routines which interpret DTC data, including enhanced interpretation of status byte for DTCs in UDS modules.	1.Support for new UDS addresses required for compatibility with new systems found in latest car models.Auto-Scans now show sub-system label file names. 2.Can use the new 7-Digit PIN/SKC codes to match new keys in almost immobilizer equipped VW/Audi/Seat/Skoda models.
Support Cars	VAG vehicles from 1996 to 2015 and part 2016 new cars	VAG vehicles from 1996 to 2014

From the form, you can easily find that Vagcom 15.7.1 HEX CAN USB and Vagcom 12.12.1 HEX CAN USB is different on support pc system and support the years of car.When you plan to buy a vagcome diagnostic cable, you can refer to the form.