I'm bumping this yet again because I finally have seen all of the Friday the 13th movies...
Friday the 13th (4.5/10)
Friday the 13th Part 2 (6/10)
Friday the 13th Part 3: 3D (6/10)
Friday the 13th Part 4: The Final Chapter (6/10)
Friday the 13th Part 5: A New Beginning (3/10)
Friday the 13th Part 6: Jason Lives (6/10)
Friday the 13th Part 7: The New Blood (6/10)
Friday the 13th Part 8: Jason Takes Manhattan (1/10)
Jason Goes to Hell: The Final Friday (5/10)
Jason X (4.5/10)
The series averages out to a 4.8/10 which...isn't so good. Personally, I perfer Freddy.
Part 2 and Jason Lives are my two favorites, and I probably ought to give the first one another chance, but I was very disappointed with it. I think Jason X might have some corny fun to it, so I want to see that one again. Jason Takes Manhattan is one of the worst movies I've ever seen.
I think I'll take a break from horror for a while, then get to work on Halloween. I still have the Child's Play, Hellraiser and Evil Dead movies to see, too.