Having once played Brigade F&F to extinction - using my old Airfix troops - I decided it was time to give Regimental a try and build a more modern army to do it with.
I rejected 28mm as too bulky - also beyond my painting skills, and 15mm because it was too close to the 20mm I already had. The answer therefore was 6mm. This would also give the sense of mass and tactical density I had always hankered after.
Adler figures are beautiful - I use them for the individual commanders - but also very frail and bendy.
Heroes and Ros - I couldn't get close enough to judge, but they looked lacking in precision.
Rapier - very gracile, but the heads are exactly to scale and therefore appear 'pinheads' next to anyone else, they do offer a range of poses, but only in shell jackets - so they were used for some confederate variety
Baccus - my final choice, they come in paintable strips and are nicely detailed, the poses are limited but sufficient and they have a solidity and durability that is worth having on the table.
Problem - Baccus figures come in 20mm strips, but standard F&F favours a 25mm frontage. I could have scaled everything down - F&F do a play card to let you do this - but decided I'd rather stay mainstream, with no one needing to make any mental adjustments; so invested in a good pair of hobby clippers instead.
6mm Fire & Fury - Winchester 1862
A trial run at Regimental F&F - the Union can't win so there's no need to fret over tabletop ego, it's just a test bed for the rules