Which power supply to go with this build?

ImDaBaron

Admirable
May 26, 2014
1,866
0
6,160
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Pentium G3258 3.2GHz Dual-Core Processor ($69.99 @ Amazon)
CPU Cooler: Noctua NH-U14S 55.0 CFM CPU Cooler ($68.99 @ SuperBiiz)
Motherboard: ASRock Z97E-ITX/ac Mini ITX LGA1150 Motherboard ($114.99 @ Newegg)
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory ($79.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($56.98 @ OutletPC)
Video Card: Sapphire Radeon R9 270X 2GB Dual-X Video Card ($179.99 @ Newegg)
Case: BitFenix Prodigy (White) Mini ITX Tower Case ($68.99 @ NCIX US)
Optical Drive: Asus DRW-24F1ST DVD/CD Writer ($19.94 @ OutletPC)
Total: $659.86
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-09-19 12:52 EDT-0400

Hey guys just wondering what you think would be the best power supply to go along with this build. Some people have mentioned the Corsair CX 600W and Antec 550W. But I'd like some other opinions. Thank you!