If you can find it, I'd say get substance, cuz it has all that extra stuff to waste time on. But really, it's not that big of a difference, and honostly, I was kindo dissappointed in the VR missions anyways. I think they are of comparable price, about 10 to 15 bucks used, I think. Get whichever you can find, and if you find both, get Substance.