Whichever one Spike wants to snuggle the least. Because he gets all the ponies you don’t chose.

Roll a d6 and let the Random Number God decide.
 
1 - Applejack  
2 - Fluttershy  
3 - Pinkie Pie  
4 - Rainbow Dash  
5 - Rarity  
6 - Twilight Sparkle  
Sorry, Spike.
 
And the winner is… Fluttershy! I’m okay with this.

FUCK YOU, I’M SNUGGLING ALL OF ’EM!!!

Seems to be the only one to choose Rarara. O.R.F. must be asleep.

Snuggle Pinkie obviously - 3 -  
Plushie Pinkpon needs her huggles :D

Go looking for Luna.

Rainbow dash get ready for a snuggle of a life time

@Solar’s Wrath  
Too bad Spike isn’t in that fusion.
 

You can only snuggle one. The others will kill you when if not chosen. What do?

@ZhaoZoharEX  
That’s also my answer :D

Tie between Applejack, Pinkie Pie and Spike.
 
:(

Everyone that didn’t pick Pinkie loses. :P

Give me that dragon.

And YES I would cuddle the hell out of Spikey-Wikey.

… Is this a trick question?
 
Applejack!

I’ll snuggle this ONE group.

Applejack
 
Everyone else can go by the day just gibe apelpon pls

Pinkie of course

Run to Canterlot

Is this supposed to be a conundrum? I snuggle Twi of course!

kage bunshin no jutsu  

Find Luna or Cadence.

@DJDerpy2013  
It’s “Squiggy”  
No L

Twilight of course!