Here's some more New York imagery:

NYS Interactive Mapping Gateway

NYS GIS Clearinghouse - Orthoimagery

Note that for many areas they also have several years of imagery available.

Also, another consideration for imagery is what time of year it was taken.  Depending upon what you are using the aerials for, you may want to get imagery from a certain time of year.  For example, if you want to see trails, getting a late fall image when the deciduous trees have lost their leaves ("leaf off") may help in seeing trails on the image.

Chris Donohue, GISP