I guess I'll be the first poster to say Beartic. Which to be honest, I never really did like at first. When I saw it in the anime for the first time, however, I instantly fell in love with it! I think it would do Beartic well if his sprite had him on all fours, rather than standing up though. Same with the artwork.
I've never used Beartic before, but I do have plans to when I finally pick up my White again and replay it before the release of B2/W2 in the US. I will say this though, Beartic could have really done well had it only been given a better move pool.
As for Vanilluxe, I just don't see the appeal. It's a double scoop ice-cream cone Pokémon. When I first saw this, I honestly had to ask myself, "What was GameFreak thinking?" I'm still waiting for them to get me back on that, but until then, I just don't really fancy Vanilluxe or its evolutionary line in general. I will say this though, Vanillite is cute. I just hope that when we eventually get a 6th Generation, GameFreak doesn't start turning more food products into Pokémon. They've got a lot more animal species they can cover before they start resorting to more food-like Pokémon in my opinion.
Does anyone see the logic in how an ice-cream cone can be faster than a bear by the way? I know Pokémon isn't known for their realism when it comes to things, but I just don't get this one.