im going to create a third team with the following pokemon can you choose the best pokemon out of the two i give plz??

Arcainine/e evee(evolved with a fire stone)
Regirock/Reg isteel
Solrock/Luna tone

i cant decide between them & the rest of the pokemon that will be in this team are:

eevee evolved using a thunderstone
eevee evolved with a water stone
& rayquaza

& i am purposely not using super strong pokemon cuz my first two teams are really strong & i want to keep these pokemon between level 40-55 -not so strong.