In terms of a smooth money withdrawal experience, Bitstamp was the best I came across. Took 1 day and was painless.
I'm actually fully verified on Gox, there was a period where they were doing verifications at high speed and little fuss (a pdf cell phone bill was all it took for me) but it doesn't matter, last time I tried to withdraw money I ended up cancelling after a month and taking a loss rebuying and checking out elsewhere. Nobody in that place can (or is allowed to) tell you when a withdrawal would go through. After several weeks they will still say they don't know where you are in the queue, except that it's quite long because of a limited amount they can push through their bank yada yada yada. It's all BS. They've been playing that song since summer, and the only reasonable explanation is that they simply do not have the funds to cover all the withdrawals. A few will trickle through just to keep up appearances but the vast majority is backlogged for many weeks at best. Gox just isn't a very attractive place to send money to right now. You can send it to other exchanges, most of them have considerably lower BTC prices than Gox and very low deposit fees. It's a vicious circle, Gox BTC rates are high because you can only really get BTC out of the place reliably, and this makes it more interesting to deposit elsewhere and transfer BTC into Gox if you wish to trade there compounding the lack of fiat coming in. Either way Gox has a liquidity issue, I have a feeling if we saw the actual numbers we'd shit bricks.
(Gotta learn about paragraphs my friend)
Posting Nazi aside, this is exactly my experience with Gox. There was a good period for getting money in/out of Gox, but ever since HSA seized their Dwolla monies (and other issues) I've literally been unable to withdraw $USD from Gox since May 2013. I've tried multiple times, and each one ends up "pending" after MONTHS of service tickets, I'm told by GOX support to cancel the transaction. To me that's very clear.
I just gave up, bought BTC, and pulled out it at a loss.
Avoid GOX like the plague if you need USD in/out.