Greg - My quick take (FWIW):
There are several selection processes. The top of the Cube and the feature set of the Cube.
The most universal top is the Classic top, which accepts the widest variety of plates.
The Flip Lock is valuable if you have a single QR type, then it can be really dialed in to that plate. The benefit is that if you see the Flip Lock closed, you know it is locked. With the Classic, you can’t tell, you would have to attempt to turn it just to make sure it is tight.
The Monoball Fix works like a shortcut Flip Lock (simpler, but has the same if it is in locked position, it is locked). The downside is the plates are proprietary, you’d need the same plate for every camera. And they would not fit any other manufacturer tripod head, only Arca Swiss.
Many people prefer to remove the tops and install a RRS top with a large locking lever.
I like the Classic top. I’m just old school that way, and even if the Flip Lock or the RRS Lock Lever is in place, and I should just trust it, I have trust issues. So the Classic top forces me to check.
There are standard Cubes, geared pan Cubes, and the new ClicPan Cube (which is a favorite of Brad Kaye). previously, Brad was using a detented leveling head that was nowhere near as precise as the new ClicPan Cube.
There are many Cube users here, I am sure they will have valuable input.
We stock Arca Swiss, and if we are out of stock on any models we drop ship direct to you from Arca Swiss if ordered through CI. And free shipping on orders over $1,000 (which covers all Cubes). We are also not obligated to collect sales tax from any states except GA/FL/AR/CO.
https://digitalback.com/collections/arca-swiss-heads
Steve Hendrix/CI