If you want to lose money, choose hashing24. I bought contracts for almost 80 Th/s and after 3 months realized that I would lose 85% of my investment. At the beginning, the contract brought in BTC 0.00119363 per day, and now it's only BTC 0.00042681. If you calculate the power (80 Th/s) through any Bitcoin calculator taking into account all expenses, it comes out to 0.00269841 BTC per day.
