I've had one for a while.... I really WANT to like it, but...
The UI is annoying. Overly sensitive touch screen that is very difficult to use. It can only have 20,000 songs in the library (not an issue for most people, but it is for me).
Sounds great, battery life is fantastic, but I found myself using the m0 WAY more than the Q1. Also, this is full retail price...
ClarkusThe M0 is great is even more compact than the Q1, great product though and excellent for exercising and short trips (has bluetooth headphone pairing) https://en.shanling.com/product/222