Shows are known for many different things. Check out Pinball News show reports for more in depth information.
https://www.pinballnews.com/site/category/shows/
Pinball Expo has it's 33rd anniversary this year. Longest continuous running show. Stern tour, seminars, and in the home of Chicago. So you'll run into many people famous in the industry. And many game reveals, last year the most since Williams closed. And the LTG : ) Show.
Midwest Gaming Classic is bizarre to say the least. the gamers add a level of excitement, there seems to be electricity in the air when you enter.
Allentown was known for the flea market, now moved indoors. Pintastic, a newer show geared towards the whole family. Texas Pinball Festival is simply huge.
And great shows in Colorado, California, Florida, Pacific Northwest, Ohio.
Pinball News has a Diary section too, so you can see what is coming up.
Go to as many as you can. Don't worry about biggest or bestest. Find the ones that are funnest for you.
You'll be glad you did.
LTG : )