I used UShip. I had a few people bid but one guy, Gabriel, had experience moving arcade machines. He was also the only one willing to help bring it inside. He did an amazing job communicating throughout the whole process. He removed the mirror and wrapped it separately, removed the top rear CRT and packaged it safely, laid the machine on foam, covered it and strapped it down. The guy was absolutely amazing. It traveled over 500 miles and it cost me $600. It may seem like a lot, but worth every penny for his services. I'm sure normal size machines would be considerably less.
Contact me if you want his info.