20% per year? So the roi is like 5 years? No thanks... I think that's worse than genesis mining. And their roi is very bad...
Hmm, let me try one more time

roi 20% per year means that you will get your invested money back and + 20% (ROR 120%).
And i also think, that the difficulty increase in the next year will make the mining operation totally unprofitable. So no way to get to a roi...
Don't forget that bitcoin exchange rate could inrease too.
But what is the status right now? Anything better to offer?
Status? 120% annually
What did you mean "better to offer"? 200% back annually?

Sorry if I didn't understand you correctly.