I too have tried a variety of shaving methods and have struck a happy balance of speed and (relative) closeness with an Andis D-8 slimline pro trimmer for my beard (it comes with a selection of short combs) and it clips a good edge as well. Having zero-gapped the blades I would say it gets my neckline to a similar closeness I would previously get at around four hours after a good shave with a safety razor.
I’ve decided the ease and speed with which I can achieve this, as well as avoidance of the inevitable bloodbath when trying to rush things is worth the slightly poorer finish. If I want anything closer I have a safety razor I use to get a ‘proper’ finish, but I rarely reach for it unless I’m shaving for the experience of a wet shave. Hot towels and a good lathered shaving soap cannot be beaten, but my other responsibilities (ie kids) rather get in the way of a regular wet shave at the moment.
I’m interested in getting a foil shaver to get the extra closeness, and would be interested in anyone’s thoughts and recommendations if they use one regularly!