How many of you are GPU only miners? I have 75 GPUS running for 2 years with 4.2 kwh electricity and the GPUS are consistent making money and paid the themselves off 18 months ago. I'm planning on slowly expanding but I don't see any reason to buy ASICs, the ASICs I've had have been 50/50 profitable. With GPUs they also have high resale value if you want to close up shop and liquidate everything.
I have tried HDD mining, ASIC but i do still end up with GPU yet i do always matter about the profitability.The only good thing with GPU is that you can able
to resell cards when you tend to upgrade nor completely stop the operation.My cards already paid off and now im still mining without worrying too much on when to ROI
as long i do see some few numbers then it already satisfies me.