No, they are so inconsistent in my experience. There had been times in which the coffee tasted so good it would beat any premium cafe. But on repeating the same

No, they are so inconsistent in my experience. There had been times in which the coffee tasted so good it would beat any premium cafe. But on repeating the same with same beans, same grind setting, same water and same setting it then taste like rubber. I suspect it is due to random channeling pattern in coffee. If the water passes more through the area in which fine particles are there, it tastes bitter.