Is it OK to get a clone GM Tech2? Work as a real Tech 2?

I hope this review can help someone with the same puzzles as me.

Here, i wanna firstshare what i found about the genuine and clone Tech2 with you all...

Left -clone; right -real

Then in a forum, i was introduced to the one:
http://www.obdexpress.co.uk/wholesale/gm-tech2-gm-diagnostic-scanner-obd2express.html
Read info there and talked to the customer service staff... Decided to take a risk.. YES! I ordered it there.

So far, i have used it for a few data. The cheap one still works great. I don’t know how the genuine works but i am satisfied with the clone one.

My friend who has ever used a genuine tech 2, says the clone’s screen is much brighter and buttons feel kind of different- buttons on the original have a distinct "click" feel to them while the clones are mushy

The only thing I'm disappointed by that I didn't get the case. The other forum member stated that the price would be much more if you got the case. I wish I had done some more research because I found several sellers selling the same thing with the case for around the same price. However, I did feel more comfortable buying that from the same source as the other member.

It will work on any GM OBD2, meaning 1996+; now it’s updated to 2013.

Under the 2012 models it lists Chevrolet, Cadillac and Holden

I have used the GM Tech2 to reset IMMO for my OPEL Corsa-C 2005
Plug GM Tech2 cable into OPEL Corsa-C socket;
Boot up GM Tech2 diagnostic tool;

Enter into Main Menu;
Click Diagnostics to select car model and year;
Click Body >> Immobilizer >> Partnumber >> Additional Functions >> Reset Immobilizer, next you need to enter security code.

Step3:
Operate according to the tips, until it appears message reading “Reset Immobilize. Reset completed successfully!” It is Okay.

Sorry the last three photos are taken by my phone with a bad-resolution camera.