This is area is for Bitcoin mining only and that means using ASIC-based miners, PERIOD. Difficulty has been too high for anything else since at least 2014.
'Mining rigs' are only suitable for mining altcoins and discussion about them belongs in the altcoin areas.
Is using mining rigs for BTC specifically not a viable option anymore? How come ASIC-based miners are better?
well I would argue that this section should not exist and that all mining should be rolled into one section.
But reality is BTC mining with an asic miner like an s17 or an s19 belongs here.
indirect btc mining with a gpu rig on nice hash belongs in alt coins.