I'm a bit of an old timer when it comes to the RE games so heres mine
RE 3 Nemesis The whole atmosphere, the setting and the nemesis himself made this game fantastic in my eyes, not to mention containing one hell of a cool final line "You want STARS? I'll give you STARS!"
RE 1 Directors cut it was mostly exactly the same as the orginal apart from a few tweaks and extra's thrown in to complete the experience..Zombie Forest was awesome
RE 2 Many classify this as there favorite, and its understandable why, great characters and one hell of a story, but it just didnt have the same creepiness as RE1 for me, but nevertheless it was one hell of a game!
RE 5 Despite there being more plot holes than there are holes filed with missing people in the black forest in germany, I actually quite enjoyed it, they had really pulled out all the stops with the voice acting and did a great job with Chris, making his character very believable and almost real, they did not do Jill justice by only giving her about 10 minutes screen time in total and Sheva's constant abuse of the "partner" phrase really begins to get on your nerves, I only hope they add more DLC featuring a playable Jill chapter in future.
I was not that big a fan of 4, mainly because they did a heck of a lot of damage to Leon and Ada's characters (Leon's rather random backstory that was supposed to make up for his transtion to veteran period that I reckon most of us would have enjoyed playing and Ada's change from mysterious to stereotypical "Lara-Alike" were quite annoying) it could have been a lot better than it was, if only they had stuck to the orginal aspect of the characters personalities....