I'll be writing up on another type of Proof of Stake, as soon as I see it come through, but it is Interest Pools.
From what I have seen, BitBean (BITB), ReddCoin (RDD) and PiVX (PIVX) are the top stake coins with a 5% return. I hope to write more on that later as well.
Love to read about it once you have it posted. I regret not getting into PiVX when it was still under a dollar. Just did not understand POS as well back then but oh well. There should be other opportunities. Thanks.