SO I made a few changes that I hope you will like. They will definitely improve your price to performance.

PCPartPicker part list / Price breakdown by merchant

• CPU and Cooler: No change to the CPU, but I did choose a less-expensive CPU Cooler since the 4460 is a locked processor and can't overclock. You only need a beefy cooler if you are overclocking. The TX3 will keep temperatures low and more importantly, it will operate quietly.
  
• Motherboard: I upgraded you to a quality ASUS full-featured ATX motherboard. It is SLI and Crossfire compatible for multi-GPU setups, if you choose to upgrade later.
  
• Memory: For the most part, all memory is created equal. G.Skill is a great brand and the Ares memory is lower-profile (doesn't get in the way of CPU coolers) and costs a bit less. It has the same 8GB capacity though. :)
  
• HDD/SSD: Using the money saved from different parts, I added in a 120GB SSD for faster load times for Windows and your frequently-used programs. Same HDD though.
  
• GPU: The R9 290 has about the same performance as the GTX970 but is priced $70-$100 less. I'd like to note that the Anandtech benchmarks were performed with the R9 290's stock cooler, which was Terrible for cooling and noise. Any of the aftermarket coolers (such as the Sapphire unit in the above build) will get better performance and cooling while running quieter than the original benchmarks.
  
• Case: The Corsair SPEC-01 is a full ATX mid-tower case that will comfortably house your current parts and future upgrades. It also has many more 120mm fan slots to help improve airflow, and plenty of cable management options.
  
• PSU: The EVGA PSU above will more than adequately power this build and also allow room for upgrades if you choose to add another GPU or otherwise. It is 80+ Bronze certified and costs the same as the 500W Corsair unit you had originally selected. More bang for the buck! :)
  

I hope that helps. If you have any questions let me know. Have fun! :D