Review (5/5): Great trimmer--little mess
Having used trimmers without the vacuum feature, you get a lot of clippings all over the place. With this unit, you don't have the mess. Yes, there will be a few that don't make it in, but by far, most of them get sucked into the chamber.
The only thing that I don't like as much as an older model of this trimmer that I had is that it has a hinged door to remove the clippings from the trimmer. The older model had a removable tray. The tray was much easier to clean out thoroughly.
I'm still very happy with this unit, but I think the newer method of clipping removal is not as good as the older unit.