Your favorite and least favorite pony fanfic?

We probably don’t need a thread that will ultimately end up as “X fanfic sucks and blah blah blah”, but I have to post it anyway. You don’t have to explain why you like or dislike the fics in question, but you can.
 
My favorite right now is First Week of Winter, to see it on FIMfiction you have to be able to view mature. Another possible one for me is The Immortal Game, but I haven’t read all of it yet.
 
My least favorite is The Life and Times of a Winning pony and any other fic related to it, which I have a deep and growing hatred for. I don’t know if I care to explain why.
 
Also, if your least favorite is Cupcakes or Rainbow Factory or something, you might should think of something else, just for something different.

Ain’t nobody got time for fanfics.

My favorite fanfic is. “Oh To be old again.” It’s a nice twist on the Human in Equestria genre.

Favorite is final Dreams of a Filly  
http://amberlepu.deviantart.com/art/Final-Dreams-of-a-Filly-Ch-1-262927942
 
Least favorite is cupcakes.  
But for legits, that first one you’re going to need a metric ass tonne of tissues by the end of the third paragraph.

Still my favorite: Of Mares and Magic. It has everything: a well-thought-out magic duel, good character development, and shipping.
 
My least favorite is perhaps Conversion Bureau.

My favourite is pieces of a grey cloud (http://www.fimfiction.net/story/86538/pieces-of-a-grey-cloud). I loved the style it was written in.  
My least favourite was probably Mortal or Cupcakes :/

My favorites are The Legend of Mare-Do-Well because CELESTIA DAMNED BAT- er MARE DO WELL and Pinkie, Cupcakes (what?) cause I like Pinkamena, Past Sins cause filly Nightmare Moon, and Dream of Dawn cause Discord is cool.
 
Least favorites are Conversion Bureau cause the ponies are essentially all evil in it and I don’t like that whole humans are evil crap. And possibly Fallout Equestria, which I haven’t read, cause I just don’t like the concept. I would just rather read about the mane 6 or the royal sisters in a fallout world instead of some OC.

My favorite fic to date is ‘Ribbons and Lace’ by Jot Jiggety Jog. (NSFW, RariShy shipping)  
http://www.fimfiction.net/story/20761/ribbons-and-lace
 
Description: “When Fluttershy agrees to model a sexy dress for Rarity, the fashionista comes to see her friend in a new light. But will Fluttershy return her affections? And can Rarity stop being dramatic long enough to find out?
 
Rated R for graphic fillyfoolery and lacy underthings.”
 
Don’t really have a least-favorite.

Favorite is Fallout Equestria don’t really have a least favorite

Best: My Little Dashie, ‘cos it’s the only pony fanfiction I pulled myself to read.
 
Worst: Any story that takes itself seriously, like FO: Equestria.

Favorite fanfic? Urgh, that’s tough. Of the fanfics I’ve read completely, the ones that come to mind right now are:
 
“It’s A Dangerous Business Going Out Your Door” (Lord of the Rings-style adventure epic)
 
“My Little Denarians” (a dimension hopping crossover with The Dresden Files. Starts comedic, gets pretty dramatic and thrilling),
 
“Fluttershy’s Bad Hare Day” (Fluttershy is turned into a rabbit, and must find a cure before the transformation becomes permanent. Also, Angel is head of the Rabbit Mafia),
 
“Authored For Adoration” (Short and sweet RariJack fic where Rarity, while trying to write a romance starring her and a certain farmpony, is sorta dragged into helping Rainbow, Twilight, Fluttershy, and Pinkie each write their romance stories for Hearts and Hooves Day)
 
“Princess Celestia Hates Tea” and its sorta-sequel “A Short Story By Twilight Sparkle”
 
“Shipping Sickness” (Twilight brings furniture to life and forces them into relationships. It’s as insane as it sounds.)
 
“Derplicity” (Derpy is secretly a Changeling. Nopony notices or cares.)
 
Hell, almost anything from Skywriter!
 
Now for the worst fics I’ve read: Personally, I hate those stories who feel they HAVE to be extra-grimdark and gory, just to give the middle finger to the generally cheerful universe of My Little Pony. Why would ANYBODY want to read about the characters we know and love being broken (both physically and mentally) and raped (again, both physically and mentally)?