I have a RRS quick release, been using it for over a year with a BH-55 and Gitzo legs. I really like the RRS QR, nice heavy lever, adjustable, and it's a solid click when in place. Technically your supposed to have the level facing away from you, so you can see the center level on the ball head plate, but it's really personal preference.
I never used a screw lock mount, but I can say that if you do go with RRS, as with any quick releases, you need to make sure it's in the locked position. When using the RRS plate, I like to have the QR opened all of the way, with the level fully flipped open. This way I can place the camera plate in the middle, then lock it down. You can open it part way, slide the camera plate in, but I think it's faster to open all the way.
Locking down the camera plate is simple but I like to make sure the camera is centered (easy to do since RRS offers "zero" markers on plates/mounts) also that there is proper tension on the lever. If the plate is not correctly plates, for example the notches are not in the gap, pinching the plate, the lever will be extremely hard to move. If you take photos in a dirty environment, I'm sure this would also be the case, if dirt or grit got on the plate.
Now once locked down, it's pretty hard to unlock by accident. I used a Manfrotto head and plate combo for years, and this QR level was easy to move BUT it had a safety latch. Just my experience, with any QR type plates, especially something lever based you need to make sure it's solid before letting go.
I have not used any screw style QR plates, but I think the amount they need to open/close based upon the gap of my lever QR plate would take some time to mount and unmount the camera.
