Brought a 3520 a month ago, did only 20 burns so far, all good.
The review of the new 3530 from the jap site is not good, IMHO. So if u want to buy a NEC, do it now. As i couldn't find any 3500, so i get the 3520, no regret whatsoever
I always want to get a Benq, but its QC is just bad!! Simply, if u don't want to tweak too much. Go get a NEC. An i can definitely say that if u've been to hell with LiteOn, u'll sure appreciate the NEC