1) Would the step up from UM2s to something like the W4 or JH5 be noticeable?
2) Is there much difference in performance level between something like the W4 and the JH5?
yes imo very noticeable, i never heard or owned the jh5 though so cant speak for them
true but take into consideration the wait time, plus molds charge, and taking into consideration the current price of the w4r, sound wise the jh5 are probably better, but more expensive.
I'll still take the JH5 irregardless of the W4 price. They are just better but that's just me. Also sometimes if you go through a JH dealer impressions are free or discounted. People forget the JH5 used to cost $200 more until UE came out with the UE4 so there was a price drop to compete so imo the JH5 is quite a bargain at $400 if that's your signature.
jealous, i wish i had a dealer near me to try them out, i would probably go with customs if i could hear them before purchase...if possible, bring your own equipment to demo them, a dap with your genre of music you like will work. that way you know what they sound like with the music you like....i would esp be interested if a discount for molds or maybe even free molds were avail.
but again i erge you to bring your own music so you can get a taste for how that particular iem sounds with what you like.
the jh5 do look good on paper im sure they sound just as good