I would challenge with Steem Power we don't even know what we earn because it's not liquid and isn't traded on any exchange. It's worth some amount in Steem when you power it down depending on what the developers decide between the time you power it down and the time you earn it.

The question is what are the tax implications of 100% Steem Power? Do the taxes take place after we power down or before? If in theory you earn more Steem with 50/50 but also have higher taxes then what is the end result?