I'm part of the MX400 group. Taught me so much about not just grabbing what my friends suggested and actually researching myself. After that I saved up till I could afford a used 9800pro. OMG the difference, the Difference!
Picked up the following and rebuilt the HTPC to support my VR habit. No more moving my comp into and out of the living room.
Ryzen 1600 + mATX MB = $140
16gb 3000 RAM = $60
1060 3gb = $70 used eBay
Rest was repurposed old gear from previous HTPC
Ok so in reality I tried it with the 1060 and it...
I'd suggest getting the best HMD you can reasonably afford or wait if we have a close launch date if something decent is coming out. And if the vid card can't keep up, then I think most people are just dropping the resolution to compensate.