Like this one... Like the tilt action as a metaphor for embouchure alot. Beats the idea of blowing into the microphone big time (got the flute app that does that - impractical if you ask me). Sound quality is great - sounds like a real horn, not some synth. The help admits to the limited C major range - thats okay for a toy I guess, but will look forward to an upgrade that expands it. A nice little diversion but still need to get used to it to play something good - need to get used to using tilt instead of lip movement I wouldnt even think about with the real thing. Probably best to think of it as an iPhone instrument that can sound like a trumpet, not a true simulator (well, assuming to whatever measure thats even possible on a phone - dont expect apple to be adding a mouthpiece anytime soon!). Will look forward to seeing where upgrades with this one goes...