What Fiio are you talking about? I had x3 and x3ii and they were very stable. And as far as battery life I’m getting anywhere from 8 to 12 hours, depending on if I’m streaming a lot and that’s with a lot of hi res. I get about 12 if I’m using ES100.
It’s better than M0 and AP80 in battery life for me- it was a little worse when I first got it but after several charging cycles it’s improved.
And I wouldn’t worry to much, we’re talking about sub 200.00 daps here. Just buy it from Amazon and if you don’t like it - which I wouldn’t see why, you can return it easily.
You can even fib, and say it’s defective and not even be out shipping. I don’t know what your buddy expects for a tiny dap, but only Sony with it’s D class amps have truly good battery life, oh and some cowons do to like plenue d, but to me the clarity of m6 beats the plenue easily.
Anyways it’s not something I would worry about too much
I remember in the M0 thread you we’re leery of M0, but I told you it sounded clearer than A35 and A45, and it does .. Now you like M0, well I’m telling you m6 has that similar sound - as far as being very clear. I think you would really like it
And I know if I scour the internet I can find bad things and complaints about M0 or any other dap under the sun.