I prefer the 200 gr Hornady XTP. I have never had the need for a 240 gr bullet on whitetail. A little less recoil for the shooter when using the 200 gr bullet also.
Either will work fine, pick what is comfortable for you to shoot, recoil wise. IMHO you don't need to use a max load for either one, once again pick a load that you shoot well & use it.
Ed