Hi guys,
I stuck to tonys CustoMac Buyer's Guide an bought the GA-Z77-DS3H with an 3,4 GHz i5, 16 GB of RAM, 256 GB SSD OCZ and the GeForce GTX 660 TI with 2 GB.
The first time, I booted and installed ML via USB from Unibeast everything worked fine. But after installing Bootloader and Drivers...