I've done the math, to see just how tall a 28mm figure is, if a 1/72 scale, 25mm figure, is a 6-foot man: six feet = 72 inches, so 1/72 scale is not a 20mm figure, unless you want your Human Males to be all of 4 feet 9-1/2 inches tall! A 5-foot man would be 20.8 mm, or roughly 21 mm tall. So 1 mm does have an effect, being 2.4 inches in scale. I prefer 6-foot men, not 5-foot, or 4-foot 9-1/2 inches.
If 25mm = 6 feet, then 28 mm = 6 feet 8-1/2 inches, in 1/72 scale. That assumes the 28 mm figure is actually 28 mm tall! It further assumes the 25 mm figure is actually 25 mm tall…
A 32 mm tall figure would equate to a 7 foot 8-1/2 inch tall person! Vaguely related, a 54 mm tall figure would translate into a 13-foot tall person, and a 60 mm tall figure would translate into a 14 foot 5 inch tall person.
Buy some sample figures, or find a photo with a millimeter scale showing the actual heights of the mini's, to see just how tall they really are. Base your decision upon that.
More information than you wanted/needed, but there you go. Cheers!
