Kraken is by far the best platform I've come across. The low volume is attributed to one fact that makes me extremely happy: they say no to trading in jurisdictions where they can't get complete legal clearance to work. That means large amounts of customers are unable to use Kraken because they comply with all laws. That means that if you can use Kraken, it's extremely safe. We need organisations like that. After all, jurisdictions will comply with BTC if they see the benefits and proper use of it in other places. What BTC doesn't need is an organisation doing business it's not allowed to do, shut down, get BTC people arrested and lose millions of customers' coins.