I would go AMD for the reasons others have said, but also for long term driver performance. NVidia has shown over time that their cards stay the same for performance, meaning very little long term increase from driver improvements. AMD on the other hand has had long term driver improvements leading to longer life and better performance. Your nVidia option would start to feel crappy earlier than a matching AMD card. Also, if you can afford it the AMD is a more performant option. And consider making sure you have room to upgrade the RAM. If there are only two slots and both are full you will have to replace the RAM, but if there are two free slots you could add another 16GB later for a good boost.
I would go AMD for the reasons others have said, but also for long term driver performance. NVidia has shown over time that their cards stay the same for performance, meaning very little long term increase from driver improvements. AMD on the other hand has had long term driver improvements leading to longer life and better performance. Your nVidia option would start to feel crappy earlier than a matching AMD card. Also, if you can afford it the AMD is a more performant option. And consider making sure you have room to upgrade the RAM. If there are only two slots and both are full you will have to replace the RAM, but if there are two free slots you could add another 16GB later for a good boost.