Bitcoin have a huge value now of 2700$ and i don't see it going any higher (not on a astronomic way atleast)
i don't see it goes X10 or X20 higher like it used to be before. it doesn't make sense.
You cannot tell never when it comes to bitcoin,it is just a beginning and look at the price now and the growth bitcoin had in a very short period this year,and just imagine what the price will be when majority of the countries start legalizing bitcoin,you will see another rally more than you could expect from his situation and that is not the case with the rest of the alt coins.