I bought the original and this belong item is definitely a fake as there is immediately i notice no cutout fro the micro`usb port
Look at the price you will know - genuine will cost about `rm 130

a lot of HD games? yes, 32GB.. some HD games, many media files? 16GB is sufficient..

cz u cant transfer yr app to SD without any mod..

Depending on your usage man, as you first time to smartphone and i definetly can say you will filling it up with lotsa songs/movies/images and stuff.. so i were you..i just for the 32g without thinking much.. whats the spec for this 32g unit ? quad ? or dual core ? Australian version ? Korea ?

It depends on you, the only difference is the internal space. The whole internal storage can be used for apps unlike most other android phones. If you install lots of HD games which has been taking more and more space nowadays even 1 or 2gb of extra space, you'll want the 32gb version as you can't move apps to the sd card on the s3 without doing some modifications to the system.
I certainly think it's worth the extra money, don't know about you though. I have teh 32gb version along with a 64gb micro sdxc card haha XP

yes there is, but requires rooting, which is sth advance for non-smartphone users.. need some technical knowledge behind it to do so. can read up if u r interested.
gadget dot com is ok.. bought one phone from them before..

Only the first hard/factory reset will wipe clean your phone. After that it wont wipe your internal storage.
If you want to backup EVERYTHING then root your phone and do Nandroid backup. It will backup everything inside your phone.