There really is no equivalent to the i5 from anyone else; Intel is ahead of the competition at the high end, though more expensive.
In that other build, you've downgraded the RAM - from 7 latency to 11, so it will be much slower as "true" speed is going to be 1600 divided by the latency. Really anything above 9 latency for DDR3-1600 I would skip; there is a reason it is so cheap.
You've also downgraded the video card to a slightly less powerful one and it's $35 more expensive. Seriously, get that r9 280 while it's $140. You can figure out the rest of your build around that later if you're still deciding. But you've got like 3 hours before that deal goes away.
Most people will tell you to avoid the Corsair CX series; while other Corsair PSUs are well-built, CX is Corsair's bargain-basement line using cheap parts, and have a bad reputation around here. That EVGA one is the go-to recommendation when nothing else is on sale ... checking quickly, there is an Antec 450W unit that is slightly more well put together on sale for $25:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371045
And a 550W XFX model with a very good reputation for about $40 (I would go for this if possible):
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207013