I was looking for investment bitcoin websites that were paying and found this one: https://btc2double.com
The min investment is 0.02BTC , i gave it a try and got in few min! :)
I'm very happy, i'm going to do it again soon when the transaction confirms.
Just sharing this site while its still paying, they have alot of users so it will be working for some time i think.
There is a thread on bitcointalk about this with over 180 positive reviews!: https://bitcointalk.org/index.php?topic=2488822.0