hrbt you are so funny... You just stated that Xaur and BTC will have the same growth in next two years... Which is one of the possible scenarios, no one knows what will happen for sure... But there is one key difference,  there will always be gold behind Xaur and thin air behind BTC... So based on your prediction I advise you to exchange all of your BTC for Xaur, because if something goes wrong in crypto, you will have at least something with real value to hold on ;-)