Neat question.
Depends on whether you are concerned about running out of tail rotor control, or handling (i.e having a lot of yaw oscillations).
If you think you're close to the limit on tail rotor, then a wind from the left is not a good thing.
On the other hand, if you are concerned that you will be yawing a lot, and that you have to hold heading precisely, then a wind from the aft right is not a good choice.
No easy answer.