The only thing I have against buying clones (trademark infringement or not) is the chances of getting crap is pretty high, so much so I wont even look at them anymore.
my mega was the straw, its non infringing, but it slow boated from china broken, they would refund me if I paid to mail it back and they decided it was indeed broken (HA HA) then I could simply reorder one, course shipping charges would not be refunded. Well no sorry I just fixed the stupid thing, and after nearly a month going back n fourth + 3 weeks original shipping + parts from digikey it would have been so much simpler to pay the extra 5 bucks, tax and gas to get a real one from the local radio shack.