Well besides the magic ammount of 1000 and 800 dollars,bitcoin last year were on the 250 -300 dollars ,and get around 50 % more value gold hadnt made such as i belive.Both investments good but i would go with bitcoin has its keep growing and getting mature.
to be honest bitcoin price might fall too not only grow all the time as there were huge dumps in the past that would make you lose a lot of your money so all investments should be careful
to be honest i would most probably choose bitcoins over gold because their value might increase a lot though for a more stable investment i would definitely go with gold