Here I heard much about many other coins but thier is not stability in the price and also coins like ETH get crashed two times ( by algorithm program ) but I had never heard that bitcoin get face any problem , Only that times the bitcoin goes under maintenance when the team.of block chain made plan to upgrades .
So her in every manner bitcoin is best and also don't forget that all other altcoins have not legally declaration to use by any country but bitcoin have .
So we can see that in the future bitcoin demand will goes on increasing and that will results into bitcoin became king in this world to make useful other coin useful .