They were the first to market, but has been nothing but incompetent and dishonest since day 1.
Why "since day 1"?
I don't recall anything especially bad before the USD wires problems.
Sure, their customer service wasn't stellar even before, but this is a common problem shared with most big firms...
Guess you forgot about "gox lag"...i think they are the only exchange that has a specific API just to show the amount of lag they are currently experiencing.