V12E2 or Proxes Sport are the better ones out of your list. So between these 2, just choose whichever you can find cheaper. Both are UHP category tires.
Prime 3 is 1 class lower at touring category. Should be pretty decent and and the cheapest so good value for money.
UC6 is the worse out of your list, not worth it. It's the 2nd lowest model from Continental made only for Malaysia market.