What is the best in-game team you ever had?

My best in-game team would probably be my team on Y, which worked wonders on the elite 4 (no casualties until the champion!) although I did have to do a fair bit of editting to movesets and things beforehand to pull that off. But still, I managed it.

Flameyes (male delphox)

Nature: relaxed
Characteristic: often lost in thought
Ability: blaze
Item: heat rock
Moves:
Flamethrower,
Solarbeam,
Psychic,
Sunny day

Robin (female talonflame)

Nature: naive
Characteristic: highly curious
Ability: flame body
Item: none
Moves:
Acrobatics,
Swords dance,
U-turn,
Fly

Kyrox (male sylveon)

Nature: quiet
Characteristic: somewhat vain
Ability: cute charm
Item: leftovers
Moves:
Moonblast,
Shadow ball,
Rest,
Sleep talk

Quartz (male glaceon)

Nature: rash
Characteristic: mischievous
Ability: snow cloak
Item: never-melt ice
Moves:
Ice beam,
Shadow ball,
Hail,
Blizzard

Whiplash (male mienshao)

Nature: impish
Characteristic: thoroughly cunning
Ability: regenerator
Item: wide lens
Moves:
High-jump kick,
U-turn,
Fake out,
Strength

Albero (male venusaur)

Nature: hasty
Characteristic: likes to relax
Ability: overgrow
Item: black sludge
Moves:
Leech seed,
Energy ball,
Substitute,
Protect

Hmm, so that's it. As you can see, I actually ditched my mega lucario before that far in, actually, since I'd already used lucario twice in in-game teams, once in platinum, once more in black 2. I also used the new butterfly thing for a time, but I can't for the life of me remember its name. By which I mean the species name. I remember her nickname. Oh, and I had a zigzagoon called 'Tanuki' for utility (and comedy) purposes, because I really love zigzagoon and it helped me get over my guilt for not playing gen 3. Didn't even have pickup, either. What I still really want is a poochyena, though, but apparently I can't get one anywhere. Hmmm...