I used to have all my coins on Mt. Gox, but I didn't like messing with limit orders so I jumped ship to Tradehill just before everything went down. I was with them until Coinbase came out and switched just before Tradehill was compromised.

Unfortunately, while they were at Coinbase, I nickel and dimed away all my coins. (needed money)

Now my coins are in cold store. Never again.