Hi! As a guy with a Vive- rift isn't as advanced or high quality, and that used to make the vive the clear winner since they were both the same price. Now, though, the rift is only 6-700 for everything compared to the Vive's 800, so if you're on a budget, go with the Rift! It's a slightly lower tier than the vive but for a great price.
I run oculus rift from my friend on my 480 amd 8gb no problem