I like the way Dunlap lets you choose your wood. I haven't built one of those yet but I've been considering it.
I have built 2 from TOW, a "B" .40, and a "C" .54 both with the 38" barrel. Both are one hole shooters at 50 yards. I don't think it 's the make of the kit that matters, it's how it's put together and the shooter that counts.
For hunting the eastern woods, where I hunt, the 38" barrel is about perfect. If I was hunting the west I would like at least a 42" inch barrel. But the 38" would do if it was all I had.
The IH stock profile as cut for the kits have become my favorite ML rifle stocks. Little felt recoil and easy handling.