Which is Better 3 or 4?

Although I rarely admit it to her for fear that she may get carried away with herself my sister, Deanna, is the most fun mom I know.  She is imaginative and resourceful and invents the best games and contraptions. My sister has an uncanny knack to know exactly what a child wants. She indulges their every whim. With her own children she is able to find a balance, draw a line. With Julia, however, she has absolutely no adult filter. She is part aunt, part grandmother, part playmate and all LaLa (that is what Julia calls her). They are constantly in cahoots.  Julia's birthday is a little more than a month away, but Deanna already has her in birthday mode. It's all the talk at LaLa's house. The whole family was eating together the other night. After dinner, Deanna encourages Julia to go and get the birthday wish list that the one dictated and the other scribed. She retrieves it and perches herself in LaLa's lap. She starts and the first two items are fairly benign, Strawberry Shortcake sleeping bag and Play Dough. She gets to item #3. Her one dimple and half grin tell everyone who knows her that she is about to announce something absurd. "An IPhone 4." After assuring me that at five she really is ready for a phone, she explains that I too seldom allow her on my phone to play with apps I have loaded for her.  I look at Deanna who maintains that Julia, in fact, is the one who came up with the idea and then asked Deanna, "Which is better 3 or 4?"

 Deanna says I am lucky that she didn't tell Julia that 5 is close to launching.