VU Solo2 clone

hi all i a real newbie however i read a lot. I am trying to make decision between VU solo or duo.
A good offer has been given to me on sites including ebay for both however i dont want a clone what question would ye advise to ask to make sure its not a clone.
they have all lingo and are assuring that the new vix image has been flashed. but i not sure if to believe as price is very good for what it is.


hope some one can answer if not will just purchase second hand duo