The 44mag in 10" is not all that bad, especially if you get a good set of grips to absorb some of the recoil. I used a set of Grippers on mine and recoil was not that hard on the hand.
My choice would be the 44mag due to the availability in bullet weights and styles. Especially if you cast, hardened wheel wheights will achieve greater velocities than the jacketed bullets will of the same weight, if properly sized and lubed. If you choose to use cast, use at least 280gr to 300gr. The effect a 300gr cast has on deer is unbelievable.
I have since gone to a 14" in 44mag and recoil is nothing to worry about there either.
Have fun choosing,
That's part of it.
HL