Do you prefer Shako II or Black Powder?
I'm happy with both. Each has pros and cons as far as I'm concerned. Shako II was the main rule set used for Napoleonic games when I joined the club and after a few tries of other sets seems to be the default again, with a few house tweaks here and there. This helps in that more people get to know the basic mechanics so games flow faster and also more members can now umpire games fairly happily so more games get organised.