The best time is when SBD have a higher price than Steem, like 4 months ago when one SBD was 7 Steem, but we don't know if it will happen again. So after it depends on people if they really want to power up it is OK too as the price of Steem will go up in the future.
The best time is when SBD have a higher price than Steem, like 4 months ago when one SBD was 7 Steem, but we don't know if it will happen again. So after it depends on people if they really want to power up it is OK too as the price of Steem will go up in the future.