580 is way better than 570. It is pretty much the same thing as HD-600 with the same drivers. HD-600 is tuned a little bit better (position of the drivers).
HD650s deliver more bass than HD580 but needs 250-500hrs break-in time according to one review I read. HD-580 was one of the best bargains when Sennheiser discontinued it - I bought mine for $140.
HD650s deliver more bass than HD580 but needs 250-500hrs break-in time according to one review I read. HD-580 was one of the best bargains when Sennheiser discontinued it - I bought mine for $140.