It's more issues with the mining rig than the specific coin I'm mining.

According to whattomine, Ethereum is still the most profitable coin for GPU mining. I'm not sure how accurate this site is, but I'm sure it's a better heuristic than I'd come up with on my own.

I originally did this to learn more about computers and mining in general than to profit, but I did look at it as an interesting way to slowly turn fiat into crypto, and thought it would be slightly profitable. While I've learned some stuff, it's been more frustrating than anything, and I'm barely profiting at all, but at least it gives me something interesting to blog about sometimes.

I'll probably switch to different coins at some point, but I do have to mine .2 ETH before receiving a payout, and since I'm already about 6.5% of the way there (about $4 worth of ETH mined), I figured I'd at least stick it out til receiving a payout before tinkering with other coins.