like previous post, do your research , make your own decisions - in a lot of ways ASIC are a gamble - are you a gambling man?
i.e.: Block reward halves, difficulty skyrockets price of BTC does???
despite all the expert opinion no-one on this planet has been involved in a blockchain based cryptocurrency whose reward halves approximately every 4 years - it is all speculation and best guess on what will actually happen in the Bitcoin mining scene over the next 6 months