Mtgox pumps the price of bitcoin itself. Rumor has it that they also double spent in the last couple of months. The price of 950+ $ might look tempting, but please don't fall to that. They require verification for withdraws. There verification period is claimed to be 20 days, but this is not the case, they have been verifying my account for more than a month now. My money is stuck in there and I can't do anything, and I am sure that thousands are in the same boat.

I advise you to use other more trustworthy exchanges like bitstamp, coin base. Btc-e is also another little bit sketchy exchange. But is did not double spend and it seems to work fine.

I also recommend you to stay tuned for my own exchange that is being made by my company called coinster. The exchange is going to be accessible at coinster.co

We have been raising money to start the project and we are able to start the development on the following Monday. This is going to be a major project and our aim is to develop the ultimate exchange that combines the features of multiple exchanges. The development is estimated to take a month. We are hoping to release beta in March.

Until then I suggest you to use bitstamp or coinbase.

I hope I could answer your question