Ya, I am looking for these options too. (To quit my job). My long term perspective... chasing APR's isn't sustainable, but if you can chase APR's for the next while well the getting is still good, you can amass enough to be able to stay afloat while APR's inevitably drop. Ultimately, getting to that magic level (say 1 million, as you could live well off of interest alone on that (even if APR's settle at 8%) is the key for me.
That said, I moved my rewarded OSMO into Huahua as you are onto something. Granted, that was $20, not $50K.