I think I'll hold out for HMTs or whatever. Steem-engine was a great idea, but what a money sink. Every dollar I spend on there lost 99% of its value. Fool me once, I suppose. But this is all experimental, really and we are learning!
I made the dumb mistake of buying 50 PALMM (Pal miners) for 100 steem each when they came out. Oops!
PAL and ENG miner ROI's when I checked were like 10 years to break even. That was before the price tanked 80-99%.