I have a Meizu M3, a rockchip unbranded (I guess it's TJD sym-417), a simp3 unbranded and access to an Apple iPod (my sis' PDA). And the best device of all is Meizu, by its sound and its performance.
I've had many doubts and needed support in all of this devices, it's a normal thing, but I've found all the answers in this site or in Meizu's sites, especially Meizu fansite
which is invaluable when you are in troubles, for instance to convert a movie, which is a typical issue.
If you get from Ramos or Newman the same support, still I would choose Meizu by its awesome sound (no idea what chip Meizu have).
I've mentioned iPod, which is not an alternative in any way, due to its poor sound quality despite of its service support and all the paraphernalia around this product, Meizu simply beat it easily.
Sincerely choose Meizu M6, I prefer M3 cause I am a sound (not movie) user.
see tadad1 review here in this site Meizu M3 vs M6 review