It really depends on your taste. They are different shows and each has a different focus.
The New York State Two Cylinder Expo is a large show, and they are proud of their size and the number of exhibits. And, along with huge vendor participation, they also have a fairly large flea market (or at least they did the two times I was there). The quality of exhibits ranges from non-running junk to pristine, perfect- finish exhibits. And they have a parade and a tractor pull. To me, it has a similar flavor to what local tractor and threshing shows have, sort of a carnival atmosphere, and somewhat loosely organized, but a lot larger than almost any show – and almost exclusively John Deere.
The Two Cylinder Expo (that has been held in Waterloo during the last six years) is more like a “concours d’Elegance” than a “bring anything you have, running or not, as long as it’s green”. You’re pretty much assured of seeing around 300 tractors and implements that represent the best-appearing John Deere restorations in the country. Applications are taken and approved or disapproved for exhibits – they won’t accept exhibits that don’t meet a certain level of appearance and correctness (although the approval process isn’t perfect; you will see some exhibits that some would consider marginal). And except for a few engines being started here and there, the Expo is rather quiet – somewhat like a museum setting.
One aspect that draws my attention to a show is what they feature. This year, the New York State Two Cylinder Expo is featuring the Model “G”, so if you’re interested in “G’s”, New York would be the place to be.
I also like both shows. And I can’t say one is better than the other – to me, it’s like comparing a world-class meal in an exclusive, fancy restaurant to the best dang hamburger or pizza you’ve ever tasted that came from a local joint – they’re both great but different.