George Marshall wrote:

>Meanwhile I will not part with my Sennheiser HD600s, even though I did
>confuse Rossini with Weber while wearing them.

How are the open air Sennheiser's with blocking outside sound when
playing music?  I'm considering their 500 series, but would like
something to block outside sound for my office.  They don't need to
be the noise-canceling type, but something to muffle the others talking
around me would be ideal.  Also, do the the open air models "leak" sound
such that others can hear the music too?

Thanks,
Jeff