SOunds like fun, and an interesting experiment.
I would go in expecting certain phono stages to be a better match with each setup for specific technical reasons that deliver better sound. Then see if expectations turn out to be true or false and why that might be. I would not go in assuming that any particular device will necessarily sound best because of cost or reputation, though that might in fact pan out in the end if set up optimally. Its more about how that device specifically meshes with the rest of the system. Then of course personal preferences come into play.
I would go in expecting certain phono stages to be a better match with each setup for specific technical reasons that deliver better sound. Then see if expectations turn out to be true or false and why that might be. I would not go in assuming that any particular device will necessarily sound best because of cost or reputation, though that might in fact pan out in the end if set up optimally. Its more about how that device specifically meshes with the rest of the system. Then of course personal preferences come into play.