Paying close attention to this thread. My (non-gardener) sis just bought some acreage and wants to plant a couple apple trees. She is on Whidbey, not sure how that micro-climate might affect choices. A quick growing disease resistant variety would be best for her. She is surrounded by native woods, so my guess is she will have plenty of 4 legged friends to share her harvest so a full size tree would likely be better than a dwarf.