Take 2 scales for the same period?

I recently told you how I've sold all my 28mm Napoleonics as I hadn't used them. As you could have predicted, no sooner had I done so then I wanted to game in that era. This wasn't  helped by looking at all the beautifully painted Napoleonics lining the walls of the Wargames Holiday Centre. Before I new it I was looking sideways at the new Warlord plastics, but managed I resist. The main reason for getting rid of them in the first place was that I didn't have enough for a reasonable sized game, and I've got limited space. So I wasn't going to reinvest in 28mm. Then a little voice said,"you've liked the 18mm blue moon ACW so why not look at their Napoleonics?" 

For some reason, I don't think the way I've based the ACW will work for Naps so I want keen to go down this road, yet. I've previously tried 6mm and didn't like the amount of effort needed to get a good look; I probably also didn't have them based properly. 

At the same time most of the rules that are exciting me currently are for skirmish games. I keep toying with the idea of going down the road of Sharpe Practice. So finally I decided to order some 10mm Pendraken French and some of the 40mm Perry French. I'll paint them up and see which I like the best both in terms of finished product and the process. I think it's likely that I'll keep the 40mm for skirmishes and go to 15/18mm for massed battles but don't want to pre-empty myself. I think the deciding point will be when the Plastic Soldier ones come out.