I have delegated to Steemhunt but they don't offer 20% in STEEM. It's a combination with their own HUNT token (will probably become an SMT). I'm not even sure if they can still offer the 20% right now, it's been a while since I checked and the HUNT token has taken a hit.

I like Dlease because it makes sense as well for the vision I have for STEEM. Companies/communities leasing STEEM to fill RC pools. It's also very clear and easy to understand. Lease your STEEMPOWER to anyone that needs it and get x% ROI in liquid STEEM (whatever they offer) daily.