Help chosing Raptor 50V2 or Raptor 60v2

Hello all,

I have decided to upgrade my Venture CP to a larger size heli. I have owned the Venture CP for 18 months and this heli has been VERY faithful, extremely reliable and easy to fly. However upgrade parts are impossible to find..

Question I have is, should I go with a Raptor 50 or a Raptor 60 ? Keeping in mind I am NO expert at flying these things of course... Also, which engine choice should I go with ?

Thank you for any light you can shed on this subject...