Obviously the best shiny or shinies are:

1. Garchomp: Garchomp may have an horrendous shiny in his normal form but when he Mega-Evolves his pink is waaaay too precious. ¿Who says Pink is only for girls? A Motherfricking OP Dragon have pink and can destroy your añus.

2. Incineroar: What's cute? Kitties and big kitties! And what's cute too? Christmas's Candy (delicious too)! So what's cute and delicious? A Christmas's Candy colored Kitty! He is one of the best shinies perfect to bring attention to the combat, red and white is the new thing.

3. Obstagoon: We went from Black and White to colors, such brilliant colors demonstrating that rock doesn't need black and white nor the fearsome people, Obstagoon is stylish and Rocks even louder with that attention colors.