I think it's a no brainer to invest in Steem Power. I put everything I earn through steemit straight into steem power and I add my own cash a couple of times of week as well where I can afford it. I think over time this platform is both a means of cashflow and a means of appreciation. You keep gaining interest and accruing the benefits of steem power while also accumulating cash flow through upvotes and followers. I wish I had come across this platform a year earlier but alas I'm starting now and making my ascent lowly but surely.