Whats the best PSU i could get for my build.

[TSCShady]

Ive already got all of the components for my build other than the video card. right now Im using a 500W diablotek psu and i was wondering whats the best psu i could get to replace the one im currently using.
My build is
CPU
Intel Core i5-4460 3.2GHz Quad-Core Processor

Motherboard
ASRock H81M-DGS R2.0 Micro ATX LGA1150 Motherboard

Memory
Team Elite Plus 8GB (2 x 4GB) DDR3-1600 Memory

Storage
Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive

Video Card
EVGA GeForce GTX 970 4GB FTW ACX 2.0 Video Card

Case
Diablotek ​Diamond

Optical Drive
Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer

Operating System
Windows 10

Wireless Network Adapter
Asus PCE-N53 802.11a/b/g/n PCI-Express x1 Wi-Fi Adapter

Case Fan
Thermaltake AF0025 32.9 CFM 80mm Fan

Fan Controller
NZXT SENTRY 3 Fan Controller

Monitor
LG 24GM77 144Hz 24.0" Monitor

Keyboard
Razer BlackWidow Chroma Wired Gaming Keyboard

Headphones
Razer Tiamat 7.1 7.1 Channel Headset

 

[geofelt]

The diablotek is dangerous junk, and you are right in getting rid of it.
It is a tier 5 unit on this list:
https://community.newegg.com/eggxpert/computer_hardware/f/135081/t/45344.aspx?Redirected=true

Look for a tier 1 or 2 unit.
Seasonic is a perennial favorite.

How strong it needs to be will be determined by your graphics configuration.
I might suggest 620w or so would be about right.
Here is a chart to help with sizing:
http://www.realhardtechx.com/index_archivos/Page362.htm

Lastly,
I have no problem overprovisioning a PSU a bit. Say 20%.
It will run cooler, quieter, and more efficiently in the middle third of it's range.
A PSU will only use the wattage demanded of it, regardless of it's max capability.

 

[Rogue Leader]

EVGA 550 G2 would be perfect for you:

http://www.newegg.com/Product/Product.aspx?Item=9SIA1N83V01630&cm_re=evga_550_g2-_-17-438-053-_-Product

 

[turkey3_scratch]

I'd get a Seasonic G Series 550W.