I visited Tony's on a rainy day in December. They had the grill loaded up for the lunch rush, but there was only one regular in the place. I was glad to be able to tell the grill man (owner?) that he had a better product than the overrated Pink's in LA, which I'd recently tried.
The key is that the bun, chili, onions, mustard, and hot dog are all in the right proportions. Balance is everything. Plus, his chili is really tasty, and no beans! I have to say, Tony's is where my dad used to take me for lunch some thiry years ago, and they've kept up the standards.
All the hotdog joints along NY-5 are amazing, too. Check out the Old Mill in Phelps and have one with hot sauce and kraut. You won't be disappointed.