I love each and every one of these movies, and the Rob Zombie remakes are fucking brilliant But if I can only pick one I have to go with #3 Season of the witch. I don't think it's the scariest but for some reason it's always been my favourite.
My favorite part was when Michael stabbed Jamie Lee Curtis and she kissed him on the mouth and fell to her death, lol. Melodramatic much.
I don't really remember them too Well, but the rob zombie ones really stood out for me, but in a sociopath with it comes to horror movies. I want to see the envolope being pushed.
The original 1978 Halloween. All of them are good in my opinion, but the first one is the one that has it all - no CGI, good old fashioned classic. The head tilt of Michael is the creepiest of all time.