With the rise in M&A, how do I determine if a deal is beneficial or simply a result of overconfidence? I’m worried that hidden debt from these big moves might quietly undermine their long-term stability — how do I spot the difference?

I am using a Goldshell E-DG1M, which is perfect for home mining, and I make a profit of around $12-14 per day. Now I want to buy another, so suggest to me any ASIC miners that also use low power.