Hashflare vs Genesis Mining

A lot of people are wondering which cloud mining site is the best. Here are some calculations that I made :

Bitcoin(or sha-256) contract for lifetime:
Price: 1.2$ / 10GHS - 0.0035$ maintenance fee / day
Profit: 0.00000210BTC / day (with fee)
             0.00885$ / day (with fee)
ROI (Return of investment): 137 days

Bitcoin(or sha-256) contract for lifetime:
Price: 1.5$ / 10GHS - 0.0028$ maintenance fee / day
Profit: 0.00000227BTC / day (with fee)
             0.00955$ / day (with fee)
ROI (Return of investment): 158 days

Let's calculate profits when we invest 100$ for 1 year:
Hashflare:
100$ = 833GHS
Profit / year :0.06398631BTC / day (with fee)
                         269.08$(with fee)
Genesis:
100$ = 666GHS
Profit / year :0.05115718BTC / day (with fee)
                         215.13$(with fee)

This calculations do not include changes from BTC difficulty or price!