How to select best GM Tech 2 diagnostic scanner with my Saab

Attach 2 questions and answers to guide you on how to pick out a best GM Tech2 diagnostic programming tool.

Question 1: I am considering to buy a Tech 2 diagnostic scanner for use with my Saab. Which one of the ones have the best quality and is equipped with the latest software/hardware? Do you also sell USB port converter for the Tech 2?.
Answer 1: 2 versions of Professional Diagnostic Tool TECH2 are available, including:A108-1 Best Quality GM Tech 2 GM Diagnostic Scanner For GM/SAAB/OPEL/SUZUKI/ISUZU/Holden and A108-2 GM Tech2 Tech 2 GM Scanner with CANdi TIS Works for GM/SAAB/OPEL/SUZUKI/ISUZU/Holden
The same: they all have the same functions.

The differences:

A108-1

GM Tech2 Package List:
Tech-2 Flash Tester
32 MB PCMCIA Card with GM OE Applications
CAN diagnostic interface module(CANdi) and instruction sheet download (199.2 kb)
RS232 cable and user manual
RS232-DB9 adapter
DLC Cable, DLC Loopback Adapter
12V Cigarette Lighter Power Cable
SAE 16/19 Adapter
NAO 12/19 Adapter
Battery Power Cable
Storage Case
TIS 2000 CD

Features
1) Authentic GM software in the Tech 2 Flash means the most comprehensive diagnostic software available for late model GM vehicles.
2) Support for on-board diagnostics on all GM systems 1992 thru 2011.
3) Removable hardware modules provide insurance against scan tool obsolescence.
4) Large, easy-to-read backlit screen.
5) RS232 & RS485 ports provide the avenue to connect future devices to your Tech 2 Flash.
6) Ability to capture stored DTCs, Freeze Frame, and Failure Record for later review.
7) Ability to view the status of vehicle diagnostic tests as they run.
8) Bi-directional The authentic GM 1992-current year software will provide full bi-directional control when performing power train, chassis, and body diagnostics.

A108-2

Features
1) Authentic GM software in the Tech 2 Flash means the most comprehensive diagnostic software available for late model GM vehicles.
2) Support for on-board diagnostics on all GM systems 1992 thru 2011.
3) Removable hardware modules provide insurance against scan tool obsolescence.
4) Large, easy-to-read backlit screen.
5) RS232 & RS485 ports provide the avenue to connect future devices to your Tech 2 Flash.
6) Ability to capture stored DTCs, Freeze Frame, and Failure Record for later review.
7) Ability to view the status of vehicle diagnostic tests as they run.
8) Bi-directional The authentic GM 1992-current year software will provide full bi-directional control when performing power train, chassis, and body diagnostics.

A108-1 Package List:
Tech-2 Flash Tester
32 MB PCMCIA Card with GM OE Applications
CAN diagnostic interface module(Candi) and instruction sheet download (199.2 kb)
RS232 cable and user manual
RS232-DB9 adapter
DLC Cable, DLC Loopback Adapter
12V Cigarette Lighter Power Cable
SAE 16/19 Adapter
NAO 12/19 Adapter
Battery Power Cable
TIS 2000 CD

A108-2 Package List:
Tech-2 Flash Tester
32 MB PCMCIA Card with GM OE Applications
CAN diagnostic interface module(Candi) and instruction sheet download (199.2 kb)
RS232 cable and user manual
RS232-DB9 adapter
DLC Cable, DLC Loopback Adapter
12V Cigarette Lighter Power Cable
SAE 16/19 Adapter
NAO 12/19 Adapter
Battery Power Cable
TIS 2000 CD