most: small and light, watertight, easy to use, very good price / quality ratio
Cons: no management of sub folders (so you have to scroll through the tracks one by one), no fixing pin on the device; and if water gets a little sound quality is diminished (and it is inevitable in my opinion, but good that can be improved with another pair of conical tip earphones, must see)
In any case it's decided, I takes me a subscription pool.