I gave the 16" bowl trimmer a workout last week. I spent two days on a big plant. Probably close to 12 hours between chopping, clipping buds from stems, and trimming. I did big colas by hand, the rest with the trimmer. The results aren't beautiful, but not particularly destructive. I may manicure a little more the stuff I'm giving away. I plucked and separated all the larf as I went. I got a lb ziploc bag full of larf and another from the trimmer before I started tossing it in the compost. More big stuff to go.
I can't say I love the trimmer but I can say I loved all the time it saved staring and clipping away at all those budz.
Also, it was a PITA cleaning the stick-em off the grill especially. I'll probably wait to deep clean it until after the season.