If I was to build my own PC from scratch today with your budget I'd do something like this. Someone with more knowledge might want to object to something on it though. Of course it's down to you, change the case, memory, PSU (you probably can do with a lower wattage one) or whatever. This is a starting point though.
PCPartPicker part list / Price breakdown by merchant
CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($288.50 @ Vuugo)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($33.05 @ Vuugo)
Motherboard: Asus Z97-A ATX LGA1150 Motherboard ($178.98 @ DirectCanada)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1866 Memory ($94.99 @ Canada Computers)
Storage: Samsung 850 EVO-Series 120GB 2.5" Solid State Drive ($89.99 @ NCIX)
Storage: Western Digital BLACK SERIES 1TB 3.5" 7200RPM Internal Hard Drive ($89.99 @ NCIX)
Video Card: Asus GeForce GTX 970 4GB STRIX Video Card ($421.58 @ DirectCanada)
Case: Cooler Master 690 III ATX Mid Tower Case ($106.90 @ DirectCanada)
Power Supply: Cooler Master VSM 650W 80+ Gold Certified Semi-Modular ATX Power Supply
Total: $1303.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-12 17:27 EDT-0400
The link to the list itself is here and you can change anything you want on it: Intel Core i5-4690K, Asus GeForce GTX 970, Cooler Master 690 III - System Build - PCPartPicker Canada
Are there specific parts you need or already have, such as case, monitor, other peripherals?