In what way is a recessed chamber "better made"? Is there an accuracy advantage conferred? Reliability? Safety? Long-term durability? No, there isn't.
I believe the recessed rim cylinder to be a safer one.
With the current solid head case design, I would agree that there is not a lot of difference between the two.
However, one must remember that when the recessed rims cylinder was introduced, balloon head cases were very much in common use.
Those balloon head cases had a tendency to shear the rim off at the junction to the case body when used with even moderate loads in
conjunction with the cases not having been cleaned of the mercuric priming compound.
THAT is the reason the use of the balloon head cases are discouraged today.
Cases in point: Shooting balloon head cases in my .41 Colt SAAs sheared a rim occasionally causing me to abandon them.
The rim (in the un-recessed cylinder) flew out the right side every time, kicking open the loading gate.
Similar experience with .45 AR in a 25 Smith, although the separated rims could not escape the rear of the cylinder completely due to the larger rim diameter.
A recessed cylinder would not allow a rim to become a flying object.
Just sayin',
JT