Hi,
Well, if it's based on what you have, then just set them both up ideally and listen to them on the same couple of scenes or musics (upmixed for surround) and see which ones sound best to you.
If you're looking to get something to do this, that's different. But if you're just trying to use what you have, well, it doesn't matter and you can just test it which is the best option.
Very best,