(disregard my earlier post in this thread.)
These are my two current IEM's. Can't compare them as they are "apples and oranges". JH5 is the Mustang GT and W4 is the Lexus. Both awesome but different.
I could call both great "all arounders" but the JH5 is rawer and more robust, full, in your face. Good clarity, good midrange, good bass but it's mid bass more than deep bass. Typical JH sound. Big, full, robust...but fairly balanced. (JH5 actually brighter sounding than W4)
W4....Total refinement, bigger soundstage and better extension. Much more the audiophile's choice.