First I want to thank you repeatedly for bringing Binary Options to Zorro!
I would appreciate if I could re-enable Spread for Binaries, because
a) many Brokers "protect" (=cheat) themselves against too successful traders with a spread b) there are hybrid binary options (I've seen theese at dukascopy) that have spread (and a higher payout in return).
With longer term expiry times, there shouldn't be much difference with the performance, but with 60s Options, a 1Pip spread will probably make a significant difference. It would be interesting to see, how much room for broker cheating your strategy has until you fall below break even.