There are a couple that draw critique. Several others are great choices in my view. I have 12 locks in the parts bin. The best 2 sparkers are Davis locks. Their bridle-less pan, round faced English trade lock with the cast-in engraving and their colonial Germanic lock out-spark the rest out of the box. Could be luck of the draw and with another dozen assorted locks perhaps everyone’s favorites would out perform the Davis locks.
Ditto. I'd add the late ketland with the square tail to the list of good sparkers from Davis too. The other flint offerings I don't like much.
D. Rase: I have always left a message with Tim and have always got a call back with in a couple days at most. Maybe he just doesn't like you.....
To the OP, there is a big difference in time period between the early and late Ketlands, also depends on the mounts you plan on using. Let us know which trigger guard and buttplate and we can line you up with the correct lock. I'd put the late ketland post 1800....and there is a certain set of mounts and stock style that go with it.. The early Ketland is more of a Rev war period lock and that era of English gun is sensitive to the mounts and stock style too. You can't just use a jumble of various period parts on these. Well, you could, but it's not very interesting when you do that sort of thing.