I've got 2, one in TAF and one in STNG and one going in my TZ when it comes. Great sound, super easy to fit. I have pinball pro speakers in the TAF for stereo 2.1 with the sub but the difference over stock is only marginal save really r the bass.
Only issue I had was skipping samples and bad streaming, I put this down to the usb memory stick it ships with (Sandisk) so I swapped it for lexar jump drive (fastest) and no more problems.
I think shaker support is mooted in the future to with a sub woofer you don't need one

easy to add the 2.1 stereo support and great to control the cab/back box volumes.
I just don't have the time nor inclination to set up my own sound mixes and some of them that you can get are a little mixed in quality.
Overall I really like them, the sound mixes can sound a lot different to the originals so probably not for purists, but the original highly compressed original files are usually available.
I'll take a video and upload later.