Which chansey is better?
I have two Chanseys and 120 Chanseys candies. One is 88,9 (A11, D15, S14) cp 793 and other 86,7 (A12, D12, S15) cp 799. But I'm not sure about what I should evolve and power up first. The strange about these Chanseys is that the 86,7 have more combat power than 88,9 in the same level! Do you have suggestions?

Answers
Use the one with 15D. Dont matter which moveset chansey has. Their hp is what matters. In this case your trying to choose from a 3D for 1S stats. Therefore use the one that has higher iv with 15D.
By the way how do u have so many chansey... i am level 38 and i only have 20 candies and my chansey is at level 27.5 (100% iv). Does chansey spawns the same spot like dragonite? Where i live have a dragonite spawn spot everyday at 5pm. Does chansey have one?