A few pointers, as I recently built a computer for a buddy of mine in Ontario:
1. Corsair 750D. Get it if you can (it was just released)
2. Wait for the R9 290X if you can. Availability might be limited as it's just been released.
3. If you're doing potential SLI, I'd recommend the X1050...
This is such an exciting time to buy a new pc! I was in the same boat 4 months ago and wish I had waited. But hey, CF 7970s aint bad for $550 when I got it. :)
Anyway, 3 things I'd recommend:
1. wait for the R9 290. Preorder it when it goes online Oct 4 (I think).
2. get the newly released...