I think bitcoin mining is still profitable, remember bitcoin prices have reached $ 4200, if the cost of electricity is not more than 10 cents then with S7 bitmain we can already RoI about 4 months.
As far as you think mining is profitable. Ii think all of these are very much profitable and can help you earn a lot of money. This entirely depends on what you have in your mind. The only thing which matters is your skills. If you can make money by mining, then go for it. Otherwise choose the best suitable option.