I tried CPU mining for Loki, but my Ryzen 5 only got 100 HS, so I gave it up in fear of burning out the processor.  Something to do with the CN Heavy algo requires CPUs with a bigger cache.

For GPUs, I’ve been using blockfoundry.org.  Since I’m in the US and they are too, I figured I’d give them a try.  Might be my imagination, but I think I make more coins on lower hashrate pools than on higher ones, though in theory it should be the same over a period of time.