Critter question

[MachineMaiden]

Okay I just recently got a flawless critter stone in a bag and realized.. what am I going to use it on? Most critters I have that I like are already blue but there have been some I've been toying with the idea of using on but then I realized..are they going to be good in battle even if I like them. So, I have come to the forums again for help. I am thinking of possibly using it on these critters below:
Bandicoon (breed 5)
Bandicoon Kit (breed 5)
Masked Tanuki (breed 10)
Masked Tanuki Pup (breed 11)
Shy Bandicoon (breed 5)
Mulgore Hatchling
Mr. Wiggles
Wolpertinger
Winter Reindeer
Perky Pug
Imperial Silkworm

Ya, that's quite a list and I'm still not sure. Any and all help will be much appreciated. I heard that bunnies are pretty good but how good are they against higher/pandaria tamers? Looking for a critter to fill my battleslot. Thank you again!

[Jin]

It would be better to use it one on of the critters you recieve from a quest or event that's always green, since in time you will stumble across wild blue pets to capture.

I used my critter stone to upgrade my Wolpertinger since it has some interesting moves in combat and only comes in green.

(Oh and if you are doing the leveling achievments it's smart to first level it to 25, then use the stone so that it lose 2 levels and then take those last levels again, that way you get credit for it twice. )

[Graven]

As Jin said, I figured it better to use stones on pets which can never otherwise be rare. I used one on Mr. Wiggles - he's actually pretty cool, and has a hit/crit buff which I haven't seen on any other pet. Used another one on Wolpertinger because its abilities seemed different and interesting.

[MachineMaiden]

Have you used Mr. Wiggles/Wolpertinger against the pandaria tamers? How do they fair? I hate being so indecisive.

[Gendou]

Wiggles is a pretty good choice due to the aforementioned Uncanny Luck.

However, I would choose Wolpertinger.
He has an impressive skill-set that can lock down another team if you have decent luck on stun procs.

[Jeykama]

If you don't have a S/S bunny, upgrade a Spring Rabbit, since that's all it comes in. Probably the only critter that's really useful against trainers.

Uncanny Luck comes in handy if you run a low-acc team (like a mechabear or something) but if you're like me, I can't be arsed to constantly swap against trainers.

[D_prelude]

Out of those, the pet I upgraded that I ended up enjoying the most was the Perky Pug. Heal + Beast Moves made him very well suited against other critters.

[Golzhul]

Wiggles is a pretty good choice due to the aforementioned Uncanny Luck.

However, I would choose Wolpertinger.
He has an impressive skill-set that can lock down another team if you have decent luck on stun procs.

I was actually going to nominate either Mr. Wiggles or Wolpertinger, but it seems Gendou beat me to it, so yeah, +1 to that.

[Myrrmi]

If you don't have a Lucky Quilen Cub, I'd suggest upgrading a Perky Pug. He's pretty tough little beastie, eating both critters and udeads, doing pretty well against elementals, and being able to heal himself on top.

And it's a perky pug. Come on...