So this is the final build (!?) - 2480$ inc shipping with all fans:
Motherboard: Asus P8Z68-V PRO
CPU: 1x Intel Core i5-2500K
GPU: 2x Leadtek GTX580 1536MB
PSU: 1x Corsair 750W CMPSU-750TX
RAM: 1x Corsair 2x4GB DDR3 1866MHz Vengeance CMZ8GX3M2A1866C9
HDD: 2x Western Digital 500GB SATAIII 7200RPM 32MB WD5002AALX
Case: 1x Cooler Master RC-692-KKN2 690 II
DVD-ROM Read/write: 1x Samsung SH-S222AB
CPU Cooler: 1x Cooler Master Hyper 212 Plus
FANS:
2x Enermax Silence 140m
2x Sharkoon Silent Eagle 2000 120mm fan
2x Zalman ZM-F1 Plus 80mm fan
Edit: Christ, I'm way too sleepy now. Been on this since I nearly woke up; forgot to add the motherboard as well to the configuration. So the above config adds up to a total of 2480$ or 2400$ without the fans (CPU cooler is not subtracted). Oh well, I'm going to bed! My head is totally messed up, hopefully some constructive feedback will be here tomorrow when I come back
Edit 2: If the 8gb RAM set above at 1866Mhz is switched out with the 8gb set Kingston HyperX 8GB (2x4GB) 1600MHz DDR3 memory the setup above goes down to 2375$ without the fans or 2455$ with fans.
Compare it with my previous build - 2400$ inc shipping with all fans:
Intel Core i7-2600K processor
2x MSI N570GTX 1,28 GB DDR5 TWIN FROZR II
Asus P8Z68-V PRO
Corsair 2x4GB DDR3 CMX8GX3M2A2000C9 XMS3
Corsair 850TX V2 850W
Seagate 2TB 64MB SATA3 ST2000DL003
Xigmatek CPXT-025 Aegir SD128264 CPU Cooler
2x Zalman ZM-F1 Plus 80mm fan
2x Sharkoon 120mm Silent Eagle 2000 fan
2x Enermax Silence 140mm fan
Samsung SH-S222AB/BEBE fekete OEM DVD
OCZ 60GB Agility 3
Cooler Master RC-692-KKN2 690 II
Now I'm out ;p