I only own Brawl but I've played Melee before, and the new one is coming out soon! I can't wait! Who did you usually always play as? Who are you probably going to play as in the new one/who would you add? In Melee I never had a set player. But in Brawl I would destroy with Ike! In the new one I'm probably gonna play as either Ike, Greninja, Little Mac, Sonic, Lucario, Lucina, or Charizard. I would add in either Shadow or Tails, I think there needs to be one other Sonic character besides Sonic. Also I heard that Nintendo is probably going to have Minecraft be playable on the Wii U. So we might get a Minecraft character in a Super Smash Bros game, possibly this one (more than likely not going to happen), or the next Super Smash Bros.
For super smash bros brawl on the wii, I use Lucario because of the facr he is my favorite Pokemon, asides from Riolu, and Luigi competitively. For melee, mewtwo, Marth, or Roy.
I use Kirby EVERYTIME, and i just dominate everyone ^_^ KIRBY OF COURSE! And if i could, i would bring Steve from Minecraft ^_^ (Maybe you can even change the skin of it :O)
I think Melee is the best, unless you have Project M on Brawl. What it does is it changes the engine, and even adds a character or two, to make it play more like melee, while still keeping the characters from Brawl. In both that I play, I like to play as Fox, Falco, Captain Falcon, and Snake.