I bought this over a year ago and since i've used it for small gigs in bars, restaurants and hotels. That's right, gigs, this thing might look like a toy but it is a proper instrument.
Its strongest selling point is obviously portability, but the reduced stage real estate is welcome too.
The bass drum is surprisingly low in pitch, and the self muffled head is easy to tune. It's also stable enough so you can play without worrying it might tip over. If you use a mic and some EQ on it, most people would not hear the difference between this and a regular bass drum.
The snare drum sounds crisp and dry and it takes a while to figure out how to tune/adjust snares to get the best sound possible. I swapped the head for a coated ambassador and it sounds much better, but do not expect it to sound like a regular snare drum.
Things get really interesting if you incorporate other drums like floor toms, a regular snare drum etc. You can also loosen the snares and use the snare drum as a 10" tom/timbal, or add it as a piccolo snare to your regular set.
Bear in mind that this drum kit, awesome as it is, is not a replacement for a regular drum set.
To sum up, I'm perfectly happy with this kit. You should not expect to record any award winning stuff, but it gets the job done, especially those "can you maybe play the cajon" situations us drummers have to face from time to time.