I use a Petzl Jane because the lengths are perfect for me and I really appreciate the lack of knots for low bulk. {I do a lot of tight stuff}.
On a test rig they will give nasty shock loads. Meantime, back in the real world, they are fine. Use them correctly.
I have fallen on my previous set: a sudden drop from a wide bridge, so straight down, no body friction. Of course, being on a traverse line between two alpines, and having c4m rope, plus body / harness deformation I felt no shock at all.
Test rigs give a graded list when comparing systems, but the figures are pretty meaningless. Loosely knotted barrel knots will always give lower shock loads than sewn 9mm dynamic, which will be lower than sewn tape [which the French seem to use without much issue].
Know where you are on the continuum and act accordingly.
Bulky knots are far more of concern to me. I have had to be assisted a number of times in the early days when I was following conventional wisdom and using them. Getting kit stuck in a crawl could be quite serious, especially when solo caving. Compact, light and as snag free as possible is the way for me.
I have only ever seen one person loosen his barrel knots. And I thought they were dangerously loose!