Which universal diagnostic tool to use for a car repair shop?

Which universal diagnostic tool to use for a car repair shop?

I run a car repair shop, which have to deal with a lot of car makes. That requires a high quality, powerful, universal diagnostic tool. I searched on the internet, and found one named Autosnap GD860. That's it:

What's the features of Autosnap GD860
See, this GD860, with 7 inch 800 x 480  pixel TFT color touch screen, looks just like Launch X431. The touch screen is one of the most atractive thing for me. What's more, this GD860 is equipped with a mini printer to print out the diagnostic result data.

What about the funcitons of Autosnap GD860
The GD860 is described as working in all electronic systems of cars: Engine, ABS, SRS, AT, etc. And it can be used to get live data, to do adaptation, actuation test, ECU  programming and so on. Besides, GD860 records and playbacks live data, and display the data in text , graph and analog for easy  data review and analysis.  The car brands listed below, is those which GD860 works in: OBDII/EOBD, Toyota, Honda, Daihatsu,  Mitsubishi, Mazda, Nissan, Suzuki, Subaru, Hyundai, Kia,  Daewoo, Audi/VW, Benz, BMW, Volvo, Opel, Citroen, Peugeot,  Renault, Land Rover, Smart, Fiat, Seat, Saab, Gm,  Chrysler, Ford, Chery Great Wall Brilliance, etc. Oh yes, there are two more things in the end that moved me: Windows CE operating  system, and the ability to capture, save and print screenshots.