I've been to the show a few times in the past. Some were excellent, others didn't seem like that had a great selection. The last one I went to (this spring I think it was) wasn't that bad. The only thing I bought was a tactical flashlight which was really nice. Not sure if I'll make it down this weekend but I think it's worth a trip if you've never been before.
I don't think I've ever seen SCOPE there but NRA always has a table. If I recall correctly NYSRPA had a table there once and I think they had voter registration as well.
Honestly, the poster that said NY gun shows have nothing left for him, echos my sentiments exactly. I own what I want, what I want still is now illegal to purchase, so why bother? I've toed the line on the handguns for years, dutifully following their every whim and law, sometimes waiting 4 weeks for a damn amendment... now they're telling me I can no longer by the semiautomatic long guns that interest me? Screw it. No point in going to anymore shows.