Sonic Frontiers Line-3 SE+ vs. Atma-sphere MP-3.

Has anyone compared these two fully balanced, differential, preamps to each other?

Both seem to be described as extremely neutral, dynamic, and transparent. (lean to others, depending on personal tastes).

I am particularly interested in hearing about the Parts Connexion upgraded Line 3's (SE+ status) since that is the current iteration of these discontinued preamps.