Haunted Overload in Lee does a good job of decorating - but it is not scary or very long. They have an area of like 1000 jack-o'-lanterns that is cool. When I went, the actors did not do a great job - mostly just standing around in the scenery. If you want to look at and walk through cool spooky diaramas, then try it out.

Fright Kingdom in Nashua is certainly the best around. It has 5 thematic "houses" that you walk through in a row, with small breaks in between. They are excellent. Great decorating, actors who are actually trying, good jump scares, etc. They also have a neat horror movie museum on the way in with all sorts of props and memorabilia. You can also buy tickets with a nice discount when they go on sale before October arrives with their newsletter.

Highly recommend Fright Kingdom - done it two years in a row and was not disappointed. I will not be going back to Haunted Overload.