Yes, at least somewhat so. People in the wealthier city neighborhoods have more tolerance for petty crime that would scare away suburbanities. They also tend to send their kids to private schools so they don't worry about the conditions of the public schools. The upscale city neighborhoods have a very strong sense of community. I have friends that live off of Elmwood and when they frequent local business you can see that everybody knows one another. People in that area are dedicated to urban life and intend to stay for the long haul. This is reflected in the steady increase of housing values in these upscale city neighborhoods.
East Amherst should hold together through the 2020's but it's already starting to filter down from being an upper-class area to an upper middle class area, as many of the wealthy from East Amherst are moving to Clarence to build bigger homes and pay lower property taxes.
Unfortunately I see Synder going down the tubes in the next 10-15 years. It's a shame too because there are really some beautiful old homes in that area with real class. The school district demographics tell the story, it's beginning to experience white flight, not too bad yet, but I'm sure the tipping point isn't too far away:
http://emsc32.nysed.gov/repcrd2005/cir/140201060000.pdf