Their dev team is excellent, but the business side and everything related to banking and withdrawals is atrocious. If they ever turn into a reliable exchange, i might return. Until then i'll watch from the sidelines.
The banking is totally out of their hands and always will be unless they buy their own bank, which'll be instantly shunned.
I mean compared to other exchanges. I use Kraken as well and i've never had any fiat withdrawal problems there.
The other thing that bugs me is that they don't even admit to having problems. They tweet about having processed billions worth of withdrawals in October, yet they can't process mine and those of other people i've read complaints from?