I voted for the following:
1)Treecko & co. - I've always liked the Hoenn starters and I also found Grovyle pretty amazing. I picked this line mostly because of design and anime appearances. As you may all remember Ash's Treecko, I'm sure I needn't go any further.
2)Lugia - It's always been awesome along with all the Johto legendary Pokémon, actually. If there's one thing Johto did right, it's legendary Pokémon. I love Lugia's signature move Aeroblast, and the design always struck a chord when I picked the legendary list. Though it isn't the most impressive of designs, the long body and the scales always looked cool. And the wings are pretty awesome. Heck, Lugia's a great Psychic-type. I've used Lugia a lot for defending my team as a whole.
3)Arcanine & co. - I've also liked Arcanine a lot, mostly because of Growlithe. Growlithe always looked cute yet combined it with fierceness and learnt the best of moves. Arcanine also is a good battler and your number-two choice (after your starter) as a non-legendary fire Pokémon in your team. Also, I'll be understating myself if I don't mention the design of Arcanine, which always struck me as regal and indeed, Arcanine looks very legendary.
4)Mewtwo- After the introduction of Mega Mewtwo Y, I got a liking towards Mewtwo and I must say he's climbed a lot in my favourite Pokémon list. Mewtwo is an impeccable battler, to say the least. As a mighty legendary Pokémon, his powerful strikes don't miss many. With his megas, we can even choose for him to be a physical or a special attacker. That's quite a handy trick to have up your sleeve, because the opponent wouldn't know what to expect. I liked Mega Mewtwo Y's design, too. Through that tail behind his head to the new headpiece, he always struck me as impressive.
5)Gallade & co.- I'll admit that I never specially liked Ralts, Kirlia or Gardevoir. Though the designs were impressive, I was never compelled to use them anywhere. But then, Gallade happened. And fairy-type. Both these were plenty to hike up this family into my list. To start with, Gallade happens to have the most stylish of designs, and that's saying a lot since there's a lot of Pokémon in a 718. With such an impressive pair of blades comes a great battler. I've used him a lot in my Pokémon Pearl and he's never failed me. He even took down Tower Tycoon Palmer's whole team without getting finished himself! Though I admit that was because of a spot of luck, Gallade is spectacular nevertheless. Gardevoir also has new traits she could use because of the new fairy-type. This gives her more advantages than weaknesses, and, in my opinion, she's become a lot better now.
6.Beldum & co.- There's seldom time for Beldum, is there? But strangely enough, I find Beldum quite cute and honestly, Metagross is quite a tough egg while it comes to battling. He has a nice moveset and great base stats, and that makes me rely on him a lot. Now, I'm not overly fond of Metagross, but the family is not a name you'd like to miss because of their uniqueness and strength.
