The WM1A has that laid back Sony sound, with a 3D soundstage, that is deep and wide. It has a very organic, analogue feel to it. Instrument tonality and separation to my ears with the CL2 feels very organic, natural, and not edgy like the other DAPS I tested.
I am not a fanboy of anything, but to my ears the Sony line, even 3 years after release, has the best Sound Quality. Other DAPS may have more power, or streaming, or what not, but their sound to my ears comes across as "off". A bit forced, artificial.
We all hear things differently at the end of the day. We buy what suits us best.