Just going off the mods, I think it's reverse order for me- 8, 7, 3, then 2. Just the fact that 7 and 8 were built for 1st person goes a long way. RE2 was a little too puzzle heavy (finding keys) for VR for me, wanted more action compared to flatscreen. Still great though.
It's hard for me to place the standalone 4 on there because it's been a couple year now, but I'm looking forward to the motion controls being added to the RE4 remake's mod.