Best to worst. I enjoyed everyone very much though, so there's not much separating them. I did like CVX very much, but somehow it ended up near the bottom. I guess I just like the others better.

Resident Evil 2
Resident Evil 3
REmake
Resident Evil 0
Resident Evil 1
Resident Evil 4
Resident Evil: CVX
Outbreak File 2
Outbreak File 1

The rest I have not tried.