Which miner is best for RVN?

In the realm of cryptocurrency mining, selecting the optimal miner for a specific coin such as Ravencoin (RVN) can be a challenging task. With the ever-evolving landscape of mining hardware and the competition within the network, it's crucial to make an informed decision. The key factors to consider include hash rate, power efficiency, cost, and availability. Hash rate determines the miner's capability to solve the cryptographic problems required for mining, while power efficiency determines how much electricity is consumed per hash. Cost, of course, is a significant factor in determining the overall profitability of the mining operation. Availability is also crucial, as some miners may be difficult to acquire due to high demand or limited production. With these considerations in mind, I pose the question: "Which miner offers the optimal combination of hash rate, power efficiency, cost, and availability for mining RVN?