-Intel i7-4770k (I'll do overcloking in future)
-Asus maximus hero
-Corsair 2x8gb 16gb 1866 DDR3
-GTX 770 (I'll sell and change it for an equivalent of GTX 780ti or better in 2-3 years)
-SSD Samsung 840 evo 250gb + HDD Seagate 1tb 7200rpm
-Fractal R4 (+1 front fan 14cm)
-Asus Xonar DG
-LG 24" IPS FullHD
Maybe 650W is overkill although I prefer a little more 750W for have a few more of room in any case. I can't decide about these PSU's (all with 7 years warranty):
-Seasonic X-750 (~138€)
-Seasonic Platinum 660 (~132€)
-Seasonic Platinum 760 (~150€)
-Corsair AX760 (~134€)
I like more the Seasonics aesthetically, and also I would like avoid have coil whine if it's possible (I have read many issues about the corsair AX760 especially and it could have more risk of whine than the seasonics) but usually I guess it's just a matter of luck. So the Platinum 760 compared with the X-750 worth it for 12€ more? and compared with the others? which of them could have less issues and coil whine?
Any advice will help me, thanks!