I play mostly acoustic percussive guitar, so I was looking for a good quality pick-up able to grab the percussions.
It does its job wonderfully. The sound from the strings is pristine. My guitar has a lot of natural sustain and I tend ot play a lot with it, the pick-up translates that sustain extremely well I was really surprised.
About the percussions on the body: it does a very acceptable job, good enough for recording. I would advise getting a compressor with fast attack and fast release to tame the transient from some percussive hits (one that I use a lot, with the thumb just above the sound hole isn't really usable as-is with this pick-up which grabs the sound way too much. But it's normal given how it is made). If you don't play percussive guitar, I think the only drawback may be the price.
Quite easy to install as well. Still go to a luthier if you don't have the tools to open that hole for the jack though, I didn't and even though I did manage something clean I did sweat a bit.
I removed a star from handling since when the pick-up came in, the battery installed was empty (the switch came on the active position). It doesn't bother me as I use the pick-up system passively anyways. Also, there was a second battery in the packaging, so not that big of a deal anyways.