I'm afraid I'd have to say that while Liqui normally works fine, if you ever have a problem (deposit not arrived, withdrawal "sent" but no transaction visible, etc), it's impossible to get them to do anything about it.

I'm still waiting on 1 btc to be credited 9 days after I sent it (appears on blockchain). No reply from support in that time (ticket #10728). To be honest, that is pretty unacceptable and in my experience I haven't had the same issues with the likes of Kraken, Polo or Bitfinex. How many days do you wait before it becomes theft?