I think your answer should begin with you saying exactly what type of pins you want to play at the show you're visiting, and then you should also think about how long you want to play them.

MGC has Toms on Friday that has about 360 machines set up, some newer and a ton of older ones. But it's only a few hours, so it's not as good as they as the VFW show.

If you want to play the new games immediately after they are revealed, Expo and Texas get all the new reveals.

There are lots of different reasons to attend each show, it's worth really defining what you are interested in and then seeing what fits the best.

It depends how you define playing a lot of games. Expo has the most time that the game hall is open for play. That's definitely a bonus and the tour of Stern is awesome too.