Make no mention of CPU/GPU miners when bitcoin mining is concerned.ASIC miners are your sure bet for bitcoin mining.Even at that, you will still need to consider your electricity cost and the type type of ASIC miners. Antminer S7 and S9 (4.7 and 14TH/s respectively) seem to be the best among the best at the moment, they too may soon be obsolete when the next generation miner using the  7nm chips are introduced to the market.
You may find this useful of you intend to invest
in mining hardware.
https://www.coindesk.com/bitmain-ceo-announces-new-7nm-bitcoin-mining-chip/
https://medium.com/novamining/rush-to-7nm-asic-chips-development-incoming-revolution-in-bitcoin-mining-industry-55b609cb73c5