Replayed Resident Evil and my friend kept yelling I am a greedy sonofab#tch because I use no ammo, herbs or saves and try to run by all enemies. Got 100's of ammo, nine ribbons, and twelve herbs. Feels good.
Yokai Watch looks interesting. I have 4 and Code Veronica too but haven't started on them either. Would you recommend just playing in chronological order?
It is not essential but chronological may be best to play the first 3 and see the evolution of the series. 4 is quite different but seen by some as the pinnacle or Resident Evil (and action gaming). If you want to play them all, I say do it chronologically, if you just want to play one try any.