I suppose this ultimately comes down to which perfect fruit one thinks looks the best, in which case my favorite is the apple. Ironically, the apple is the only fruit that I didn't have as a starting fruit in any of my towns. I was originally aiming to acquire it when creating my fourth and final town, but I opted for cherries instead because the map was decent and it had a few of the starting villagers I was planning to have living in the town. Since I have no desire to create another town in New Leaf, if perfect fruit is still a thing in whatever mainline Animal Crossing game is released in the future, I'll probably try to get apples then.
Apple. Only because that was the starter fruit in my very first town and I love how perfect apples look. My second would be the butt peach because that's the only other one I really like.
I really like both apples and cherries, but i ultimately prefer apples. It feels just a lil weird to see any other fruit on trees even though that's normal. Maybe it's just how the sprites are conveyed. Unfortunately i ended up getting peaches, my least favorite, for my current town. But fruit isn't something I'd reset over :0
I like cherry and peach almost the same, I used to prefer cherry but I kind of got a bit tired of it now. apples are nice but I wish it was fully red (bright red and not dark like perfect apples). I don't really like either oranges or pears mainly because I don't like the color orange and while pears are nice on their own they make the town look a bit dull because trees and grass are also green (it depends of the season but still)
I don't mind any of the fruit, but yeah, either the perfect apples or cherries are my favorite. (I'm definitely biased bc red is my favorite color lol) they have this really pretty sparkly look to them a lot of the other perfect fruit don't really have. Right now my town's native fruit is peaches though, which is fine. I think the only time I reset over fruit was when I was like.....13 and my first new leaf town had oranges, haha
Judging by the pictures I've seen, I'd have to say that I like cherries the best - they've got a rich red color, and their perfect form seems almost candied.
Cybrtron has pears. I'm not complaining, though I do worry that when the trees revert to green, it may be difficult to distinguish them from the trees themselves. It might make the town seem a little... plain?
My very first town (on Gamecube I might add) had pears as the native fruit. My town in Wild World also had Pears, and my first New Leaf town did too. I'm just really attached to them I guess.