I've been testing the LP Tambourine for a few weeks now and I think this should give me a good basis to rate this product.
First off: think about your style of playing resp. the genre that your band plays. You won't need that little beauty, if you're playing for a metal act. On the one hand, it does not really fit to that style (ok, subjective opinion!) on the other hand, the tambourine's sound level is simply too soft. That might also be the only real downside I could discover for myself. The "bells" could be a little bit heavier to produce a more dominant sound. For a smooth Jazz-groove, it might be perfect, but if you want to integrate it into a rock-groove, you should be aware not to hit too heavy!
However, the system of this tambourine really consoles me for that! As a drummer, you do not always want to take off the tambourine, once you play a song, where you don't need it and for the next song, you have to remount the tambourine on the hihat again. This tambourine is the solution to all those problems. Just press the black button on the top of the tambourine and it's completely locked, literally nothing is moving. Press the button again and you have the full sound going. Beautiful!
Besides that, the whole instrument is pretty lightweight, so there is absolutely no influence on the height of the top cymbal once you open the hihat.
In addition, the tambourine looks pretty cool with that nice red color.
So, for me as a drummer in a (blues-) rock band, this is the perfect way to make a nice groove even more interesting. I would definitely buy it again!