I'll help as much as i can, im am trying to purchase at least 1 pack from each manufacturer for my own comparison purposes, so this idea is right up my street. I recently e-mailed Magister militum about there range as some are slightly smaller than others here is there response, which could be added to you info:
"We used two sculptors on the 10mm ranges. One has a slimmer style of sculpting. The foot to eye height is pretty similar but with the base and helmet they do look different, especially as one is a more thickset sculpting style."
"The ranges done in the thinner style are, Celts, Early Germans, Carolingians, Sarmatians, Goths.The Saxons and Vikings are also in the thinner sculpting style, that is all of them"
Incidentlaay both styles are good sculpts just not compatible with each other.
Do you own any Obelisk mini's they look really nice?