I'm looking to add a dedicated 11 1/2 ligne movement holder to my toolbox for working on ETA 2824 (and friends) movements. I have a Bergeon 4040 which is adequate, but I remember DonLuis recommending a dedicated one and I've noticed that the 4040 has several protrusions to catch with your fingers and is quite light so it's easy to knock around. I'm considering the following two and wonder what your impressions are. (Pictures courtesy of Esslinger)
It looks beefy and heavy, not likely to move easily. The downside is that the movement doesn't clamp in place like a 4040. Does the movement fit well enough that it doesn't need to be clamped, or do I need to worry about it hopping out at the worst time? They advertise that the hollow adjustable screw in the center is to support the movement when installing hands. Necessary or fluff?
This looks to have a split ring with a tapered screw that adjusts the diameter, possibly to clamp down on the movement. Does it actually allow the holder to tighten up on the movement? It looks taller, lighter and less stable than the 1996. Is this the case? Also, no adjusting screw, will I miss it?
Note that I'm not cack-handed but I do notice that the 4040 occasionally moves when least expected and I'm trying to increase my odds of success as best I can.
Thanks for any advice.