I invested heavily in all sorts of Bitcoin related securities including several scams. Then the stock exchange just closed one day and I lost almost everything on the exchange.
If I had just bought and held all of my BTC I would be a very rich man today and retired.
It depends if you want euros / usd / ... and how long you are able to wait. Mtgox has a long queue to go though
You did not really read the question, did you?