Mint vs. Unbuntu vs. Windows

[piccolo289]

Hello all, im in the process of building a pc and was considering using linux over windows. Now, i know the price is a massive positive for linux, but the amount of games available on windows is also a big plus for windows. Now ive decided on the final straw being emulation quality. Does dolphin run better on a version of linux over windows? Which version of linux should i use?