I think I loaded a couple hundred rounds with the press ,arm and tube, just to see how it worked, then went to the RCBS hand held.
Now I have two the RCBS, and a Lee. I like the Lee a little better it seems it is a little more sensitive and I can feel the primer bottom out better than the RCBS.
I use my thumb to push on the "flipper" on the Lee, where as the RCBS is designed for 3 or more fingers to operate the "flipper", which in my opinion makes the sensitivity go away because the force is spread out over a larger area (3 or 4 fingers).
Also the the "flipper" linkage of the RCBS bottoms out just about the time the primer fully seats and does not give me the feed back that the Lee does.
I can feel the force it takes to seat the primer fully, this is especially useful with cases that have been loaded multiple times, you can tell when the primer pockets are getting loose.
I made two longer "seater" rods for the RCBS , small and large primer, this makes the "flipper" stop well short of the grip portion.