Dolsen's Rifles, Kent Militia used the Baker Rifle during the War of 1812. The best Bakers are the Rifle Shoppe Bakers, but they are pricey and take forever to arrive. Indian made Baker rifles can have problems. With some, the breech is the weak point, the touch hole channel has a dog leg in it. Check with Military Heritage to see if they fixed this problem. MH muskets can have issues with fit and finish. I have purchased from Loyalist Arms and comparing the two, MH & LA, my buddy purchased from MH, LA has better fit and finish. A fellow I know in the US bought a MH Baker and fitted a Colerain rifled barrel for $170US and ended up with an inexpensive Baker Rifle.
Middlesex Village:
http://www.middlesexvillagetrading.com/
Loyalist:
http://www.gosea.com/loyalistarms/
Military Heritage:
http://www.militaryheritage.com/muskets.htm
My $.02
SW