Yes, the Neil 3646 was nice also. What was surprising is the high quality of the crown and tube in the Neil 3646. (As an aside, I refer to it as the Neil 3646, but I suspect this is the same model offered by our other fine dealers also.)
The WM has nice threads also, but the length of the threaded portion of the tube that sticks out from the case is shorter. Both are improvements over the 183 cases, at least the ones I've seen with the stripped crown/tube issue.