If we talk about miners, they all need to be serviced quite the same, but i would recommend Kaspa miners, VERY RELIALE MINERS!
These miners are very expensive and you have no guarantee of payback. On this coin, there seems to be a competition between ASIC manufacturers, and the most modern ASIC model now, in a few months, will not be the same. And most new ASICs cannot be installed in ordinary residential premises without upgrading the electrical wiring.