First one is fun for me in part due to nostalgia; it's odd seeing everyone so young, and I get teary eyed when I think about what the characters will eventually go through
Second is very cheesy, but nostalgia again kinda makes it bearable. There are some horrible scenes though
Third is classic
Forth is flawed and rushed, but once things start rolling it gets pretty good
Fifth is an abomination, and easily the worst film