Did you say Galaxy 5 has Wolfson inside?
By the way Galaxy S2 does not really sound great due to poor Yamaha DAC chip.
Galaxy 5 has a Yamaha chip. Galaxy 4 and 4.2 have the Wolfson.
As said the 5 has the yamaha dac, i actually don't mind it, sounds fairly neutral to my ears.
It sounds fine to me. I think those that do complain it isn't good enough for them are the users of sensitive IEM's. With normal headphones I've never had any complaints with the sound.
I find Neutron player to be the best in terms of SQ, clarity, detail etc in my Galaxy 4.2, it also produces the best numbers in tests... but some prefer the PowerAmp sound sig and UI so try both and see which you prefer..
Do you know if their is any add on player that will allow it to play 24 bit audio files ?