Here's a great place thats dedicated to sniffing out bad R4 Clones and Fakes, because believe me theirs allot of cons out their willing to sell you a fake.
So, I found all the info i need to determine where i buy my next R4 here, with the help their research
Finding the Fakes and Phony R4 sellers
http://www.r4ds-forums.com/viewtopic.php?f=50&t=1099and Buying from the TRUSTED R4 sellers
http://www.r4ds-forums.com/viewtopic.php?f=38&t=1182I hope this info is useful to you, before you buy a fake