Hitbtc IS NOT SAFE.  Coins are taken offline for no reason and at a moments notice and never come back online.  They halt deposits and withdraws for no reason, no warning whatsoever and if that happens you're screwed.  They never respond to tickets, etc.  It's pretty obvious the positive reviews/comments are from employees of the company itself, just look at all the bad grammer, mispellings, etc.  Good luck either way.