I was a but sad about Maine at the time. I was shocked by the level of homelessness and surprised that there wasn’t as much to do as expected. In retrospect I think I would may have enjoyed it more had I purchased a GPS first. You might think that you can just use your phone or whatever. Just spend the $100 because it will change your road tripping life.
I think if I were to go back to Maine I would probably try and visit somewhere a bit more iconic, go visit the beaches, etc. I am sure it is a great state, but the parts we saw were not amazing.