Well I only (so far….) Play the Austro-Prussian war. I use 10mm figures and tend to use Black Powder. So far it has provided decent games with enough period feel. Also used Principles of Wasr, and indeed my forces are organised and based for this. They too gives good game but it a little slower and more clunky than with BP. Would love to try Bruce’s 1866 but they are a tad on the expensive side to try out.