I have a LOT of the Italeri Woodland indians, some Hat Peninsular British and Italeri British (the latter painted up to look like US infantry) and some of the old Revell Revolutionary War figures. These new figures I will be getting and are some of the best (?) so far from Strelets!
Those Italeri Indians are very nice, will have to get hold of some to supplement the Tecumseh set when it comes out.
Other sets useful as various US regulars are the HaT "Waterloo Netherlands Militia and Belgian Infantry" and Emhar "Portuguese Infantry and Cazadores". Both have tunics with no lace and the latter have short gaiters reminiscent of the winter gaiter-overalls sometimes worn.