A few pages back, I saw someone lump Pit, Link, Marth, Ike, and Shulk together because they all fight with blades. I find that ridiculous for so many reasons.
Pit's blade attacks are either speedy or multi-hit.
Marth's blade attacks are specialized for spacing.
Link's blade attacks are hefty and powerful.
Ike's blade is slow, but very powerful.
Shulk's attacks come out slow, but have incredible range.
I'd say that the most similar when it comes to their blades are Link and Ike, but even then, Link has projectiles he can lean on as well, so the two characters are still completely different.
Anyway, as for my mains...
Charizard is my #1 guy. I don't care if he's low tier or anything, I'm passionate about the character and I like the way he plays. Besides, underdogs rule. I'm really proud of using a "bad" character, especially when I managed to win.
Pit and Dark Pit are my runner ups. I prefer Dark Pit, but I will usually use Pit instead for his arrows in matches I'm more serious about winning.
Link is easily my #3, and is on the verge of replacing the Pits. I love alternating between sword and projectile attacks mid-match.
Lucario is an old Brawl main, and is my #4. The only thing I like about his play style is his grabs and Force Palm, though. The rest feels too weak, too slow, or too short ranged, depending on the move.
In less serious battles, I also might resort to Palutena, Ganonderp, Kirby, Pikachu, Jigglypuff, Lucina, Robin, Duck Hunt, Sonic, Mega Man, or Doctor Mario for the lolz.