X and Y are arguably the best main pokemon games ever made. Then again, each had that wow factor, and here is what:
Red and Blue: nostalgia
Gold and Silver: Cool New Mons and Kanto, resulting in nostalgia
Ruby and Sapphire: the lack of remake (Lol, its actually prettieness and cooler mons)
Diamond and Pearl: Online
Black and White: story
X and Y: PRETTIENESS! And overall epiucness.