The locking Neutrik requires very strong pressure on the red metal tab (or an extreme amount of pulling force which overrides the locking mechanism) to remove the plug. It is also bulky.
The combo Neutrik has smooth insertion and removal with bifurcated contacts, but it is bulky and ugly due to the useless XLR silver locking tab and compatibility holes.
The M-Line and Slimline Neutrik have 3 broad metal springs the plug must push past, resulting in 3 stage high pressure clicking insertion and removal.
Cheaper jacks from Neutrik, Switchcraft, and others are generally shunned.
If I were evil overlord, my ideal jack would have smooth, silky operation, multiple contacts to eliminate noise, and a mechanical locking mechanism that is manually engaged with a lever, slider, or button, thus offering the option to lock or not. Perhaps an automatically locking version would also be nice, but in either case, the release mechanism should be effortless to operate.