Just bought XB500, practically no burn-in so far, so it can get only better
In comparison to S600s (both used with EQ [the magical friend of your wallet
], to make them sound as good as it gets)
- XB500 feels way more solid and pleasant to touch, no crackling noises, it could maybe even compete with DT770 (which I sold not so long ago) it's not AS sturdy, but it's definitely smoother with no harsh clicks when twisting it.
- A tiny bit (only) more bass on XB (tried cranking it to the limits), this confirms my statements about ridiculous sub-bass potential of S600s.
- Soundstage definitely better on Sonys
- Properly EQed XB500 has more natural mids than JVCs, better mid-bass response also helps to avoid this funny highs bleeding to mids, when, let me call it, a "tap-kick", calls for mids.
Overall, with tweaked EQ, this is a really nice HP with decent SQ and amazing bass response, although it's not very portable, especially compared to JVCs, but will definitely keep them for using indoors or some car/bus trips.
BTW, I have a Black Noire version made in 06/2012, I guess it's in the group of the last made XB500s, what's more, it was the last one in the store! I bought them for ~65$ (converted from LT) and I thought I'am overpaying slightly, but now I see the prices on amazon raised to a minimum of $70, so I'am glad I bought em, furthermore, they are definitely worth every penny I paid.