I have a Frankfort case prep center its set up for bulk 5.56mm case trimming. Like it too. But if I'm just going to prep under 100 cases I just use lees instead.
For small round use and manual, I would buy the Manual RCBS Case Pro and order the complete three way cutter heads in the caliber you need.
They will trim and chamfer the inside and outside of the neck while trimming. And with buying separate cutter heads you dont have to set up the cutter head when changing calibers. You just change the case holder and unscrew the cutter head and install the one you need and set the length.
I have the same machine thats powered and a Giraud.
I have been using a Wilson for decades and see no reason to change for low volume case trimming.
For large volume I use a Giraud case trimmer. Both work well for there intended purpose as does the occasional Trim Die.