As for those two charts. They look very similar in terms of volume, a cross over below the zero cross on the MACD and similar RSI and moving averages
My pick between the two is FLT. I feel more confident in FLT but in all honesty I had spent so much time researching FLT where as I did not do the same with DFLY.
Just to be clear. When I say they look similar, I am speaking from a chart analysis/perspective