Indeed, it would be in the eyes of the beholder.
For me the old style is the best tabletop miniatures style.
The popular front rank figures, the calpe miniatures prussians, are in my opinion, in the same style.
Look great on the tabletop, better to paint and so one.
The anatomy more correct style, like the perry miniatures, what should I say?
Its not my cup of tee.
But as we talk about imperial romans, please tell me, which roman legionaries figures are in your opinion much better, than the aventine ones?
The only ones I know are the andrea models 30 mm figures, which are really slim and from the anatomy more correct.
But may be you know others?
To the theme poses.
The subject is roman legionaries.
The romans which are shown in formation could not all have different action poses.
Roman legionaries, for example, in the very agile "infinity miniatures" poses, would look something special

Wargames foundry old perry EIR (more poses but every pose without headvariants), foundry IR (only one pose per troop type, no headvariant), Gripping beast EIR (very static and few poses), Newline design EIR (also static poses and ne head variant), Crusader miniatures EIR and MIR (only one pose, no head variant), old glory miniatures EIR and MIR (bad sculpting, few pose variants), warlords plastic romans could not be compared with aventine, because multipose plastic figures have more choice to arrange in different ways.
......
Avantines EIR have in your eyes static poses, which are the poses, that tabletop players like for roman legionaries.
As I say it before, they are very detailed sculptings, have many armour variants.
Manica, helmet variants and in the near future mail and scale legionaries in different poses.
Only the foundry miniatures perry EIR (25 mm figures with also wrong anatomy) have more variants, but the aventine range is at the beginning.
Many more to follow.
But again,
Beauty is definitely in the eye of the beholder when it comes to wargames figures.
Best regards
Von Moltke