Don't regret it, I just bought 1MHs X11 for 0.086BTC. My first whole day payout was 25000 satoshis, then 23000, and now 20000 satoshis. I suppose the reason behind the decreasing payouts is the rising Bitcoin value.

But if I count with an average 23000 satoshis per day I need 374 days to get my investment back and the contracts are for one year. So this way I don't expect any profit but a loss.

The only solution can be if I change the payout from BTC(auto) to some X11 coins and value of those coins will rise in the future...

What do you think?