A dilemma, gentlemen. After reading Maurice, I'm definitely in. Doesn't require a lot of miniatures as it is really a two player game. Long term, a mulit-player campaign would be nice but that's a ways off. The other nice thing is basing. The game uses "base-widths" as measurement, so what scale and number of minis you use, is really up to you. More for your own aesthetics, really. Thus, my predicament.
I officially have Marlburian or War of Spanish Succession miniatures in 4 scales, 6mm, 10mm, 15mm and 28mm. I'm throwing out 10mm as I already do it for Might and Reason in the Unkerlant Campaign. Yes, I could double up the bases to make the square base sizes needed for Maurice, but I think they'd look weird (too many flags).
From a pure economic stand point?
28mm x 24 men to an infantry unit: $23 a unit (With my Old Glory discount)
15mm x 24 men to an infantry unit: $7.20 a unit (again, discount on Blue Moon), $9.60 for a 32 man unit. I also have a sh!t ton of Dixon 15s (seen above) too.
6mm at 16 strips to a unit: $7
From a time and effort standpoint? 6mm or 15mm is going to win.
From an artistic or tabletop view? God's own scale, 28mm wins (plus double use for Black Powder).
Oh great minds of the Blogosphere guide me in my hour of need.....