So to be honest, I am a bit disappointed about the whole Bytom thing. Paid 2800$ with customs etc. and the performance / profit is not as expected because of the fact they shipped much more units than they initially told.
35 Bytom for about 36h mining. Thats not even 20$ (today). Will keep the coins and see. But I expected double profit at least the first days. But it seems others got their unit way earlier, although i got Batch 1 (Germany).
Thats why I am sticking with GPUs. When you get your ASIC the network is already saturated and earnings down. And you can't swith to more profitable algorithm.
With GPUs you simply switch algo and keep mining.